TNKS

UniProt ID: O95271
Organism: Homo sapiens
Review Status: COMPLETE
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Gene Description

TNKS encodes tankyrase-1/PARP5A, a multidomain NAD+-dependent ADP-ribosyltransferase that recognizes substrate proteins through ankyrin-repeat clusters and catalyzes protein poly- and auto-ADP-ribosylation. Its core functions include PARylation-dependent control of AXIN turnover and Wnt/beta-catenin signaling, telomere-associated TRF1 biology, and NuMA-dependent spindle organization, with activity distributed across cytoplasmic, nuclear/telomeric, and spindle-associated compartments.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IBA
GO_REF:0000033
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005634 nucleus
IBA
GO_REF:0000033
ACCEPT
Summary: nucleus localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005737 cytoplasm
IBA
GO_REF:0000033
ACCEPT
Summary: cytoplasm localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0070198 protein localization to chromosome, telomeric region
IBA
GO_REF:0000033
ACCEPT
Summary: protein localization to chromosome, telomeric region is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0090263 positive regulation of canonical Wnt signaling pathway
IBA
GO_REF:0000033
ACCEPT
Summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:1904355 positive regulation of telomere capping
IBA
GO_REF:0000033
ACCEPT
Summary: positive regulation of telomere capping is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0000139 Golgi membrane
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: Golgi membrane is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0000209 protein polyubiquitination
IEA
GO_REF:0000117
MODIFY
Summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but misstates the direct TNKS activity.
Reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then recognized by PAR-binding ubiquitin ligases such as RNF146.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
GO:0000242 pericentriolar material
IEA
GO_REF:0000117
ACCEPT
Summary: pericentriolar material localization is supported by TNKS spindle/centrosome-associated functions.
Reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and spindle organization.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0000781 chromosome, telomeric region
IEA
GO_REF:0000120
ACCEPT
Summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
Reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0000922 spindle pole
IEA
GO_REF:0000044
ACCEPT
Summary: spindle pole localization is supported by TNKS spindle/centrosome-associated functions.
Reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and spindle organization.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IEA
GO_REF:0000120
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005635 nuclear envelope
IEA
GO_REF:0000117
KEEP AS NON CORE
Summary: nuclear envelope is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005643 nuclear pore
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: nuclear pore is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005737 cytoplasm
IEA
GO_REF:0000044
ACCEPT
Summary: cytoplasm localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005813 centrosome
IEA
GO_REF:0000044
ACCEPT
Summary: centrosome localization is supported by TNKS spindle/centrosome-associated functions.
Reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and spindle organization.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0015031 protein transport
IEA
GO_REF:0000043
KEEP AS NON CORE
Summary: protein transport is a context-specific transport-related role rather than the primary TNKS function.
Reason: Transport annotations are secondary to TNKS substrate PARylation and pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0016055 Wnt signaling pathway
IEA
GO_REF:0000043
ACCEPT
Summary: Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:0016740 transferase activity
IEA
GO_REF:0000043
MODIFY
Summary: transferase activity is too broad for TNKS catalytic activity.
Reason: The supported activity is NAD+-dependent protein ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0016757 glycosyltransferase activity
IEA
GO_REF:0000043
MODIFY
Summary: glycosyltransferase activity is too broad for TNKS catalytic activity.
Reason: The supported activity is NAD+-dependent protein ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0016779 nucleotidyltransferase activity
IEA
GO_REF:0000043
MODIFY
Summary: nucleotidyltransferase activity is too broad for TNKS catalytic activity.
Reason: The supported activity is NAD+-dependent protein ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0032212 positive regulation of telomere maintenance via telomerase
IEA
GO_REF:0000117
ACCEPT
Summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0046872 metal ion binding
IEA
GO_REF:0000043
KEEP AS NON CORE
Summary: metal ion binding is plausible as a structural/catalytic-site feature but is not the main function.
Reason: Recent structural synthesis supports a zinc-binding motif in the catalytic acceptor-site architecture, but the core molecular function is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
GO:0051028 mRNA transport
IEA
GO_REF:0000043
KEEP AS NON CORE
Summary: mRNA transport is a context-specific transport-related role rather than the primary TNKS function.
Reason: Transport annotations are secondary to TNKS substrate PARylation and pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0051301 cell division
IEA
GO_REF:0000043
KEEP AS NON CORE
Summary: cell division is supported as a mitotic or telomere-cohesion output of TNKS activity.
Reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0070198 protein localization to chromosome, telomeric region
IEA
GO_REF:0000117
ACCEPT
Summary: protein localization to chromosome, telomeric region is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0070212 protein poly-ADP-ribosylation
IEA
GO_REF:0000117
ACCEPT
Summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0070213 protein auto-ADP-ribosylation
IEA
GO_REF:0000117
ACCEPT
Summary: protein auto-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0090263 positive regulation of canonical Wnt signaling pathway
IEA
GO_REF:0000117
ACCEPT
Summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:0140806 NAD+-protein-aspartate ADP-ribosyltransferase activity
IEA
GO_REF:0000116
ACCEPT
Summary: NAD+-protein-aspartate ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0140807 NAD+-protein-glutamate ADP-ribosyltransferase activity
IEA
GO_REF:0000116
ACCEPT
Summary: NAD+-protein-glutamate ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:1904355 positive regulation of telomere capping
IEA
GO_REF:0000117
ACCEPT
Summary: positive regulation of telomere capping is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:1904357 negative regulation of telomere maintenance via telomere lengthening
IEA
GO_REF:0000117
MARK AS OVER ANNOTATED
Summary: Negative regulation of telomere maintenance via telomere lengthening is not justified by the current TNKS synthesis.
Reason: Canonical TNKS/TRF1 evidence supports release of TRF1 from telomeres and promotion of telomere elongation; the negative-direction annotation should not be accepted without context-specific evidence.
Supporting Evidence:
PMID:12782650
ADP-ribosylation of TRF1 by tankyrase 1 released TRF1 from telomeres and promoted telomere elongation.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:1990404 NAD+-protein mono-ADP-ribosyltransferase activity
IEA
GO_REF:0000117
ACCEPT
Summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:12080061
Identification of a tankyrase-binding motif shared by IRAP, ...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:14596906
The formin-binding protein 17, FBP17, binds via a TNKS bindi...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:17003112
Posttranslational hydroxylation of ankyrin repeats in Ikappa...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:17043677
Disrupted in Schizophrenia 1 Interactome: evidence for the c...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:19759537
Tankyrase inhibition stabilizes axin and antagonizes Wnt sig...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:20696165
Tankyrase-1 assembly to large protein complexes blocks its t...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:21251231
Factor-inhibiting hypoxia-inducible factor (FIH) catalyses t...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:21799911
Ubiquitin ligase RNF146 regulates tankyrase and Axin to prom...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:22699936
Tankyrase 1 regulates centrosome function by controlling CPA...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:25327252
Allosteric activation of the RNF146 ubiquitin ligase by a po...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:26373281
Loss of ATRX Suppresses Resolution of Telomere Cohesion to C...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:26496610
A human interactome in three quantitative dimensions organiz...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:26972000
Substrate-Trapped Interactors of PHD3 and FIH Cluster in Dis...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:28514442
Architecture of the human interactome defines protein commun...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:31413325
HENA, heterogeneous network-based data set for Alzheimer's d...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:32296183
A reference map of the human binary protein interactome.
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:33961781
Dual proteome-scale networks reveal cell-specific remodeling...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005515 protein binding
IPI
PMID:40205054
Multimodal cell maps as a foundation for structural and func...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005829 cytosol
IEA
GO_REF:0000107
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0090263 positive regulation of canonical Wnt signaling pathway
TAS
Reactome:R-HSA-4641257
ACCEPT
Summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
TAS
Reactome:R-HSA-3640858
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
TAS
Reactome:R-HSA-8948800
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0010521 telomerase inhibitor activity
IMP
PMID:25939383
Disruption of Wnt/β-Catenin Signaling and Telomeric Shorteni...
MARK AS OVER ANNOTATED
Summary: Telomerase inhibitor activity is not the best direct molecular-function description for TNKS.
Reason: TNKS regulates telomere maintenance through PARylation of telomere-associated proteins such as TRF1; the direct activity should be represented as ADP-ribosyltransferase activity and telomere-maintenance processes.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0010521 telomerase inhibitor activity
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
MARK AS OVER ANNOTATED
Summary: Telomerase inhibitor activity is not the best direct molecular-function description for TNKS.
Reason: TNKS regulates telomere maintenance through PARylation of telomere-associated proteins such as TRF1; the direct activity should be represented as ADP-ribosyltransferase activity and telomere-maintenance processes.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0032210 regulation of telomere maintenance via telomerase
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
ACCEPT
Summary: regulation of telomere maintenance via telomerase is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:1904358 positive regulation of telomere maintenance via telomere lengthening
IDA
PMID:12782650
TRF1 is degraded by ubiquitin-mediated proteolysis after rel...
ACCEPT
Summary: positive regulation of telomere maintenance via telomere lengthening is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:1990404 NAD+-protein mono-ADP-ribosyltransferase activity
IDA
PMID:15133513
TIN2 is a tankyrase 1 PARP modulator in the TRF1 telomere le...
ACCEPT
Summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:1990404 NAD+-protein mono-ADP-ribosyltransferase activity
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
ACCEPT
Summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0070212 protein poly-ADP-ribosylation
IDA
PMID:25043379
Family-wide analysis of poly(ADP-ribose) polymerase activity...
ACCEPT
Summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:1990404 NAD+-protein mono-ADP-ribosyltransferase activity
IDA
PMID:25043379
Family-wide analysis of poly(ADP-ribose) polymerase activity...
ACCEPT
Summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:16076287
NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyr...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:16076287
NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyr...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0070212 protein poly-ADP-ribosylation
IDA
PMID:16076287
NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyr...
ACCEPT
Summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0097431 mitotic spindle pole
IDA
PMID:16076287
NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyr...
ACCEPT
Summary: mitotic spindle pole localization is supported by TNKS spindle/centrosome-associated functions.
Reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and spindle organization.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005515 protein binding
IPI
PMID:11854288
The telomeric poly(ADP-ribose) polymerase, tankyrase 1, cont...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:11854288
The telomeric poly(ADP-ribose) polymerase, tankyrase 1, cont...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:1904908 negative regulation of maintenance of mitotic sister chromatid cohesion, telomeric
IMP
PMID:26373281
Loss of ATRX Suppresses Resolution of Telomere Cohesion to C...
KEEP AS NON CORE
Summary: negative regulation of maintenance of mitotic sister chromatid cohesion, telomeric is supported as a mitotic or telomere-cohesion output of TNKS activity.
Reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0000781 chromosome, telomeric region
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
ACCEPT
Summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
Reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0042393 histone binding
IPI
PMID:26373281
Loss of ATRX Suppresses Resolution of Telomere Cohesion to C...
KEEP AS NON CORE
Summary: Histone binding is supported in a telomere-cohesion context but is secondary to TNKS ADP-ribosyltransferase function.
Reason: This interaction fits a specialized telomere/chromatin context rather than the primary TNKS catalytic function.
Supporting Evidence:
PMID:26373281
In the absence of ATRX, the histone variant macroH2A1.1 binds to the poly(ADP-ribose) polymerase tankyrase 1, preventing it from localizing to telomeres and resolving cohesion.
GO:0005515 protein binding
IPI
PMID:15133513
TIN2 is a tankyrase 1 PARP modulator in the TRF1 telomere le...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0032212 positive regulation of telomere maintenance via telomerase
IDA
PMID:12782650
TRF1 is degraded by ubiquitin-mediated proteolysis after rel...
ACCEPT
Summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0070198 protein localization to chromosome, telomeric region
IMP
PMID:15133513
TIN2 is a tankyrase 1 PARP modulator in the TRF1 telomere le...
ACCEPT
Summary: protein localization to chromosome, telomeric region is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0070212 protein poly-ADP-ribosylation
IMP
PMID:25939383
Disruption of Wnt/β-Catenin Signaling and Telomeric Shorteni...
ACCEPT
Summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0070212 protein poly-ADP-ribosylation
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
ACCEPT
Summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:1904357 negative regulation of telomere maintenance via telomere lengthening
IMP
PMID:25939383
Disruption of Wnt/β-Catenin Signaling and Telomeric Shorteni...
MARK AS OVER ANNOTATED
Summary: Negative regulation of telomere maintenance via telomere lengthening is not justified by the current TNKS synthesis.
Reason: Canonical TNKS/TRF1 evidence supports release of TRF1 from telomeres and promotion of telomere elongation; the negative-direction annotation should not be accepted without context-specific evidence.
Supporting Evidence:
PMID:12782650
ADP-ribosylation of TRF1 by tankyrase 1 released TRF1 from telomeres and promoted telomere elongation.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0090263 positive regulation of canonical Wnt signaling pathway
IMP
PMID:25939383
Disruption of Wnt/β-Catenin Signaling and Telomeric Shorteni...
ACCEPT
Summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:1904355 positive regulation of telomere capping
IMP
PMID:25939383
Disruption of Wnt/β-Catenin Signaling and Telomeric Shorteni...
ACCEPT
Summary: positive regulation of telomere capping is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:21270334
Poly(ADP-ribose) polymerase 3 (PARP3), a newcomer in cellula...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640844
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640858
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640861
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640862
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640872
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-3640874
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-5262606
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0005829 cytosol
TAS
Reactome:R-HSA-8948800
ACCEPT
Summary: cytosol localization is consistent with TNKS multi-compartment activity.
Reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway regulation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:22864114
Poly-ADP ribosylation of Miki by tankyrase-1 promotes centro...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:22864114
Poly-ADP ribosylation of Miki by tankyrase-1 promotes centro...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0005794 Golgi apparatus
IDA
PMID:22864114
Poly-ADP ribosylation of Miki by tankyrase-1 promotes centro...
KEEP AS NON CORE
Summary: Golgi apparatus is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0045944 positive regulation of transcription by RNA polymerase II
IDA
PMID:19245366
MYPT1, the targeting subunit of smooth-muscle myosin phospha...
KEEP AS NON CORE
Summary: Positive regulation of transcription by RNA polymerase II is an indirect Wnt/beta-catenin or YAP pathway output.
Reason: TNKS regulates transcriptional outputs indirectly by PARylating pathway regulators such as AXIN rather than functioning as a transcription factor.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:0000209 protein polyubiquitination
IDA
PMID:19759537
Tankyrase inhibition stabilizes axin and antagonizes Wnt sig...
MODIFY
Summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but misstates the direct TNKS activity.
Reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then recognized by PAR-binding ubiquitin ligases such as RNF146.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
GO:0000209 protein polyubiquitination
IDA
PMID:21478859
RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulat...
MODIFY
Summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but misstates the direct TNKS activity.
Reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then recognized by PAR-binding ubiquitin ligases such as RNF146.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:19759537
Tankyrase inhibition stabilizes axin and antagonizes Wnt sig...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:21478859
RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulat...
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:21478859
RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulat...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0070213 protein auto-ADP-ribosylation
IDA
PMID:21478859
RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulat...
ACCEPT
Summary: protein auto-ADP-ribosylation is a direct TNKS catalytic process.
Reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0090263 positive regulation of canonical Wnt signaling pathway
IMP
PMID:19759537
Tankyrase inhibition stabilizes axin and antagonizes Wnt sig...
ACCEPT
Summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
Reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing Wnt/beta-catenin pathway output.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output.
file:human/TNKS/TNKS-deep-research-falcon.md
The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3** that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins.
GO:0070198 protein localization to chromosome, telomeric region
IMP
PMID:18221737
Telomere elongation by a mutant tankyrase 1 without TRF1 pol...
ACCEPT
Summary: protein localization to chromosome, telomeric region is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0000242 pericentriolar material
TAS
PMID:11454873
TANK2, a new TRF1-associated poly(ADP-ribose) polymerase, ca...
ACCEPT
Summary: pericentriolar material localization is supported by TNKS spindle/centrosome-associated functions.
Reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and spindle organization.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0000781 chromosome, telomeric region
IDA
PMID:11739745
Role for the related poly(ADP-Ribose) polymerases tankyrase ...
ACCEPT
Summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
Reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0005643 nuclear pore
TAS
PMID:11454873
TANK2, a new TRF1-associated poly(ADP-ribose) polymerase, ca...
KEEP AS NON CORE
Summary: nuclear pore is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0007052 mitotic spindle organization
TAS
PMID:17026964
Mitotic phosphorylation of tankyrase, a PARP that promotes s...
KEEP AS NON CORE
Summary: mitotic spindle organization is supported as a mitotic or telomere-cohesion output of TNKS activity.
Reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0008270 zinc ion binding
IDA
PMID:18436240
Zinc binding catalytic domain of human tankyrase 1.
KEEP AS NON CORE
Summary: zinc ion binding is plausible as a structural/catalytic-site feature but is not the main function.
Reason: Recent structural synthesis supports a zinc-binding motif in the catalytic acceptor-site architecture, but the core molecular function is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
GO:0031965 nuclear membrane
TAS
PMID:11454873
TANK2, a new TRF1-associated poly(ADP-ribose) polymerase, ca...
KEEP AS NON CORE
Summary: nuclear membrane is a plausible reported localization but not the dominant site of TNKS core activity.
Reason: TNKS has multi-compartment partner-mediated localization; the best-supported core locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0032212 positive regulation of telomere maintenance via telomerase
IMP
PMID:11739745
Role for the related poly(ADP-Ribose) polymerases tankyrase ...
ACCEPT
Summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0032212 positive regulation of telomere maintenance via telomerase
IDA
PMID:18221737
Telomere elongation by a mutant tankyrase 1 without TRF1 pol...
ACCEPT
Summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS telomere-associated role.
Reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein localization and telomere maintenance/capping outputs.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
GO:0051225 spindle assembly
TAS
PMID:17026964
Mitotic phosphorylation of tankyrase, a PARP that promotes s...
KEEP AS NON CORE
Summary: spindle assembly is supported as a mitotic or telomere-cohesion output of TNKS activity.
Reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
GO:0018105 peptidyl-serine phosphorylation
IDA
PMID:17026964
Mitotic phosphorylation of tankyrase, a PARP that promotes s...
REMOVE
Summary: peptidyl-serine phosphorylation is not supported as a TNKS catalytic activity.
Reason: TNKS is an ADP-ribosyltransferase, not a protein kinase catalyzing serine or threonine phosphorylation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0018107 peptidyl-threonine phosphorylation
IDA
PMID:17026964
Mitotic phosphorylation of tankyrase, a PARP that promotes s...
REMOVE
Summary: peptidyl-threonine phosphorylation is not supported as a TNKS catalytic activity.
Reason: TNKS is an ADP-ribosyltransferase, not a protein kinase catalyzing serine or threonine phosphorylation.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:12768206
POT1 as a terminal transducer of TRF1 telomere length contro...
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
GO:0003950 NAD+ poly-ADP-ribosyltransferase activity
IDA
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
ACCEPT
Summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
Reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and protein substrates, with acidic acceptor-residue specificity supported by recent structural synthesis.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
file:human/TNKS/TNKS-deep-research-falcon.md
Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
file:human/TNKS/TNKS-deep-research-falcon.md
**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme** that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover.
GO:0005515 protein binding
IPI
PMID:9822378
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
MARK AS OVER ANNOTATED
Summary: Protein binding is supported but too generic for TNKS substrate recognition.
Reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
Supporting Evidence:
file:human/TNKS/TNKS-deep-research-falcon.md
The UniProt accession **O95271** corresponds to **human tankyrase-1**, encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
file:human/TNKS/TNKS-deep-research-falcon.md
Tankyrase-1 is a **multidomain “scaffold-enzyme”**:
file:human/TNKS/TNKS-deep-research-falcon.md
**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).

Core Functions

NAD+-dependent protein poly-ADP-ribosyltransferase activity that PARylates TNKS itself and substrate proteins such as AXIN, enabling PAR-dependent ubiquitination and pathway regulation.

Supporting Evidence:
  • file:human/TNKS/TNKS-deep-research-falcon.md
    **Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).
  • file:human/TNKS/TNKS-deep-research-falcon.md
    Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic features including an **HYE catalytic triad** and a catalytic acceptor-site architecture containing a **CHCC-type zinc-binding motif** important for structural integrity of the acceptor site.
  • file:human/TNKS/TNKS-deep-research-falcon.md
    Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**, which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN. Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces cytosolic β-catenin and β-catenin–dependent transcription.
  • file:human/TNKS/TNKS-deep-research-falcon.md
    **Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles in telomere biology).
  • file:human/TNKS/TNKS-deep-research-falcon.md
    TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic spindle organization.

References

Annotation inferences using phylogenetic trees
Gene Ontology annotation based on UniProtKB/Swiss-Prot keyword mapping
Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative changes to GO terms applied by UniProt
Automatic transfer of experimentally verified manual GO annotation data to orthologs using Ensembl Compara
Automatic Gene Ontology annotation based on Rhea mapping
Electronic Gene Ontology annotations created by ARBA machine learning models
Combined Automated Annotation using Multiple IEA Methods
TANK2, a new TRF1-associated poly(ADP-ribose) polymerase, causes rapid induction of cell death upon overexpression.
Role for the related poly(ADP-Ribose) polymerases tankyrase 1 and 2 at human telomeres.
The telomeric poly(ADP-ribose) polymerase, tankyrase 1, contains multiple binding sites for telomeric repeat binding factor 1 (TRF1) and a novel acceptor, 182-kDa tankyrase-binding protein (TAB182).
Identification of a tankyrase-binding motif shared by IRAP, TAB182, and human TRF1 but not mouse TRF1. NuMA contains this RXXPDG motif and is a novel tankyrase partner.
POT1 as a terminal transducer of TRF1 telomere length control.
TRF1 is degraded by ubiquitin-mediated proteolysis after release from telomeres.
The formin-binding protein 17, FBP17, binds via a TNKS binding motif to tankyrase, a protein involved in telomere maintenance.
TIN2 is a tankyrase 1 PARP modulator in the TRF1 telomere length control complex.
NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyrase 1 in mitosis.
Posttranslational hydroxylation of ankyrin repeats in IkappaB proteins by the hypoxia-inducible factor (HIF) asparaginyl hydroxylase, factor inhibiting HIF (FIH).
Mitotic phosphorylation of tankyrase, a PARP that promotes spindle assembly, by GSK3.
Disrupted in Schizophrenia 1 Interactome: evidence for the close connectivity of risk genes and a potential synaptic basis for schizophrenia.
Telomere elongation by a mutant tankyrase 1 without TRF1 poly(ADP-ribosyl)ation.
Zinc binding catalytic domain of human tankyrase 1.
MYPT1, the targeting subunit of smooth-muscle myosin phosphatase, is a substrate for the asparaginyl hydroxylase factor inhibiting hypoxia-inducible factor (FIH).
Tankyrase inhibition stabilizes axin and antagonizes Wnt signalling.
Tankyrase-1 assembly to large protein complexes blocks its telomeric function.
Factor-inhibiting hypoxia-inducible factor (FIH) catalyses the post-translational hydroxylation of histidinyl residues within ankyrin repeat domains.
Poly(ADP-ribose) polymerase 3 (PARP3), a newcomer in cellular response to DNA damage and mitotic progression.
RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulates axin degradation and Wnt signalling.
Ubiquitin ligase RNF146 regulates tankyrase and Axin to promote Wnt signaling.
Tankyrase 1 regulates centrosome function by controlling CPAP stability.
Poly-ADP ribosylation of Miki by tankyrase-1 promotes centrosome maturation.
Family-wide analysis of poly(ADP-ribose) polymerase activity.
Allosteric activation of the RNF146 ubiquitin ligase by a poly(ADP-ribosyl)ation signal.
Disruption of Wnt/β-Catenin Signaling and Telomeric Shortening Are Inextricable Consequences of Tankyrase Inhibition in Human Cells.
Loss of ATRX Suppresses Resolution of Telomere Cohesion to Control Recombination in ALT Cancer Cells.
A human interactome in three quantitative dimensions organized by stoichiometries and abundances.
Substrate-Trapped Interactors of PHD3 and FIH Cluster in Distinct Signaling Pathways.
Architecture of the human interactome defines protein communities and disease networks.
HENA, heterogeneous network-based data set for Alzheimer's disease.
A reference map of the human binary protein interactome.
Dual proteome-scale networks reveal cell-specific remodeling of the human interactome.
Multimodal cell maps as a foundation for structural and functional genomics.
Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
Reactome:R-HSA-3640844
RNF146 binds RibC-AXIN:TNKS complex
Reactome:R-HSA-3640858
Tankyrase ADP-ribosylates AXIN
Reactome:R-HSA-3640861
RNF146 ubiquitinates ADP-ribosylated AXIN
Reactome:R-HSA-3640862
Tankyrase binds AXIN
Reactome:R-HSA-3640872
USP34 deubiquitinates AXIN1,AXIN2
Reactome:R-HSA-3640874
Ub-RibC-AXIN is degraded by the proteasome
Reactome:R-HSA-4641257
Degradation of AXIN
Reactome:R-HSA-5262606
XAV939 binds tankyrase to stabilize axin and inhibit WNT signaling
Reactome:R-HSA-8948800
TNKS and TNKS2 PARylate PTEN
file:human/TNKS/TNKS-deep-research-falcon.md
Falcon deep research synthesis for TNKS

Deep Research

Falcon

(TNKS-deep-research-falcon.md)
this with annotations you find in gene/protein databases, but these can be outdated or inaccurate. Falcon Edison Scientific Literature 18 citations 2026-05-12T02:16:03.904428

The research report should be a detailed narrative explaining the function, biological processes, and localization of the gene product. Citations should be given for all claims.

You should prioritize authoritative reviews and primary scientific literature when conducting research. You can supplement
this with annotations you find in gene/protein databases, but these can be outdated or inaccurate.

We are specifically interested in the primary function of the gene - for enzymes, what reaction is catalyzed, and what is the substrate specificity? For transporters, what is the substrate? For structural proteins or adapters, what is the broader structural role? For signaling molecules, what is the role in the pathway.

We are interested in where in or outside the cell the gene product carries out its function.

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Research report: Human TNKS (tankyrase-1; PARP5A/ARTD5), UniProt O95271

0) Target verification (critical disambiguation)

The UniProt accession O95271 corresponds to human tankyrase-1, encoded by TNKS (synonyms PARP5A, ARTD5). Recent literature explicitly distinguishes tankyrase-1 (TNKS1/PARP5A/ARTD5) from tankyrase-2 (TNKS2/PARP5B/ARTD6) and describes the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain) and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context. (perrard2023multiplee3ligases pages 1-2, ma2024investigationonendothelial pages 19-23)

1) Key concepts and current understanding

1.1 What TNKS encodes and what reaction it catalyzes

Tankyrase-1 (TNKS1) is an ADP-ribosyltransferase of the PARP/ARTD family that uses NAD+ as the substrate to catalyze covalent transfer of ADP-ribose onto itself and protein binding partners, generating poly(ADP-ribose) (PAR) chains (i.e., PARylation). (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 19-22, defo2024astructuraland pages 29-34)

Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate acceptor sites; a structural/functional synthesis in the retrieved literature notes preference for acidic acceptor residues (Glu/Asp) and describes canonical catalytic features including an HYE catalytic triad and a catalytic acceptor-site architecture containing a CHCC-type zinc-binding motif important for structural integrity of the acceptor site. (defo2024astructuraland pages 29-34)

1.2 Domain architecture (definition → function)

Tankyrase-1 is a multidomain “scaffold-enzyme”:
- N-terminal HPS region (function less defined in the retrieved evidence). (perrard2023multiplee3ligases pages 1-2)
- Ankyrin repeat domain organized into five ankyrin-repeat clusters (ARCs) that mediate substrate recognition by binding short tankyrase-binding motifs (TBMs) in partner proteins. (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 29-34)
- A SAM (sterile alpha motif) domain that promotes oligomerization/polymerization, which is important for physiological substrate modification and pathway outputs (notably Wnt signaling contexts). (defo2024astructuraland pages 19-22, defo2024astructuraland pages 29-34)
- A C-terminal PARP catalytic domain that performs NAD+-dependent PARylation. (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 29-34)

A schematic TNKS1 domain map (HPS–Ankyrin vs SAM–PARP catalytic region) was extracted from Perrard & Smith (Nature Communications, 2023), supporting this domain organization visually. (perrard2023multiplee3ligases media 2e6d286a)

1.3 Substrate recognition and PAR-dependent ubiquitination (PARdU)

A central organizing principle for TNKS biology is that TNKS-mediated PARylation can mark proteins for ubiquitin-dependent proteasomal degradation through PAR-binding E3 ligases.

The canonical E3 ligase is RNF146, described as a PAR-directed E3 that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose) and installs K48-linked polyubiquitin chains, driving proteasomal degradation. This underlies a major mechanism by which TNKS controls the abundance of multiple signaling proteins. (perrard2023multiplee3ligases pages 1-2, perrard2023multiplee3ligases pages 2-4)

A model figure depicting PAR-dependent RNF146-mediated ubiquitination/degradation in the TNKS system was also extracted as an image. (perrard2023multiplee3ligases media 9dbede60)

2) Core biological functions, pathways, and substrates

2.1 Wnt/β-catenin signaling via AXIN turnover (primary pathway)

A best-supported, canonical TNKS function is regulation of canonical Wnt/β-catenin signaling by controlling the stability of the β-catenin destruction complex component AXIN.

Multiple retrieved sources state that tankyrase PARylates AXIN (AXIN1/2), which promotes RNF146-mediated ubiquitination and proteasomal degradation of AXIN. Loss of AXIN destabilizes the destruction complex, thereby stabilizing β-catenin and increasing pathway output. Conversely, tankyrase inhibition stabilizes AXIN and reduces cytosolic β-catenin and β-catenin–dependent transcription. (ma2024investigationonendothelial pages 19-23, perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 19-22)

2.2 Hippo/YAP pathway via angiomotin family proteins

The Hippo pathway adaptor angiomotin/angiomotin-like proteins (AMOT family) are among the TNKS-regulated proteins described in the retrieved evidence.

Perrard & Smith (2023) describes AMOT among TNKS binding partners/targets whose levels can be influenced by the balance of PAR-dependent ubiquitination pathways, and identifies additional PAR-binding E3 ligases that stabilize TNKS and a subset of partners including AMOT. (perrard2023multiplee3ligases pages 1-2, perrard2023multiplee3ligases pages 2-4)

A 2024 colorectal cancer study reports that an E3 ligase (RNF166) recognizes PARsylated angiomotin, with specific residues listed as D506, E513, E516, E528, and that the TNKS inhibitor XAV939 prevents RNF166-dependent destabilization of angiomotins and downstream YAP activation in that model. (zimmerlin2025proteogenomicreprogrammingto pages 35-36)

2.3 Mitotic spindle organization via NuMA

TNKS also targets proteins involved in mitosis. A structural/functional analysis in the retrieved corpus reports that TNKS PARylates NuMA, and further states that TNKS1 (but not TNKS2) is specifically required for NuMA PARylation and correct mitotic spindle organization. (defo2024astructuraland pages 19-22)

2.4 Subcellular recruitment/localization (where TNKS acts)

The retrieved evidence supports a “multi-compartment” view of TNKS localization via partner-mediated recruitment:
- Telomeres: recruitment via the telomeric factor TRF1 (consistent with roles in telomere biology). (perrard2023multiplee3ligases pages 1-2)
- Spindle poles: recruitment via NuMA. (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 19-22)
- GLUT4 vesicles: recruitment via IRAP (insulin-responsive aminopeptidase), linking TNKS to glucose homeostasis/vesicle trafficking. (perrard2023multiplee3ligases pages 1-2)

3) Regulation and expert analysis (authoritative perspectives)

3.1 Multiple E3 ligases fine-tune tankyrase stability (2023 Nature Communications)

Perrard & Smith (Nature Communications; published Nov 2023) provides detailed mechanistic evidence that TNKS is regulated by multiple PAR-binding E3 ligases, not only RNF146. (perrard2023multiplee3ligases pages 1-2, perrard2023multiplee3ligases pages 2-4)

Key regulatory logic:
- RNF146 drives K48-linked polyubiquitination and degradation of auto-PARylated TNKS and PARylated partners (a negative-feedback loop). (perrard2023multiplee3ligases pages 1-2)
- RING-UIM E3 ligases (notably RNF114 and RNF166) can instead bind and stabilize mono-ubiquitylated TNKS and promote K11-linked diubiquitylation that antagonizes RNF146-mediated degradation, thereby stabilizing TNKS and a subset of partners (including AMOT). (perrard2023multiplee3ligases pages 1-2)

Quantitatively, RNF114/166 overexpression caused about a two- to three-fold increase in TNKS protein and about a two-fold increase in PAR-TNKS in the summarized excerpt, and these effects depended on catalytically active TNKS1 and were abrogated by tankyrase inhibitors. (perrard2023multiplee3ligases pages 2-4)

3.2 “Emerging parallels” in regulation of PARP1/2 vs tankyrases (2024 review)

A 2024 review emphasizes that, compared with PARP1/2, the molecular consequences of tankyrase inhibition and pathway impacts are less completely understood, contributing to challenges in translating tankyrase inhibitors clinically; it also points to shared regulatory principles (low basal activity, assembly-driven activation, negative feedback via auto-PARylation, allosteric communication) as an emerging framework to guide future drug development. (yang2026antitumoractivityand pages 62-63)

4) Recent developments (prioritizing 2023–2024)

A 2024 Journal of Cell Biology paper links RNF146 and TNKS/TNKS2 to peroxisomal protein import, reporting that RNF146 regulates peroxisome import by preventing PARsylation of peroxisomal proteins by TNKS/2 and that peroxisomal recruitment can reorient TNKS/2 activity away from canonical Wnt substrates, indicating organelle-localized specialization of TNKS regulatory logic. (zimmerlin2025proteogenomicreprogrammingto pages 35-36)

4.2 Drug-tolerant persister cells in ALK+ NSCLC (2024 NPJ Precision Oncology)

A 2024 NPJ Precision Oncology study screened 3,114 compounds and identified tankyrase1/2 inhibitors (Wnt/β-catenin pathway) among top candidates to suppress alectinib-induced drug tolerant persister (DTP) growth. It reports that knockdown of TNKS1/2 increased Axin1/2 stability, promoting β-catenin degradation and reducing nuclear β-catenin, and that combining ALK-TKI + pan-HER inhibitor + TNKS1/2 inhibitor almost completely prevented DTP appearance in their model. (yang2026antitumoractivityand pages 62-63)

4.3 Biomarker-linked sensitivity in patient-derived colorectal cancer models (2024 British Journal of Cancer)

A 2024 British Journal of Cancer paper reports a study using 47 colorectal cancer patient-derived cells to examine correlations between sensitivity to tankyrase inhibitors (G007-LK and RK-582) and genomic/β-catenin features, supporting ongoing efforts to stratify Wnt-pathway-driven contexts for tankyrase-targeted approaches. (yang2026antitumoractivityand pages 62-63)

4.4 Stem-cell differentiation: endocrine commitment in pancreatic progenitors (2024 Nature Communications)

A 2024 Nature Communications study reports that selective tankyrase inhibitors (e.g., WIKI4) enhance pancreatic differentiation from hPSCs. The excerpted snippet provides group sizes at stage 6 such as n=5 (DMSO), n=3 (XAV939/JW74), n=6 (WIKI4/JW55), n=7 (G007-LK), n=8 (NA) for some analyses, supporting rigor in the differentiation experiments. (yang2026antitumoractivityand pages 62-63)

4.5 Vascular/endothelial consequences of tankyrase inhibition (2024)

A 2024 pharmacology study reports that XAV939 alters endothelial junctional dynamics, permeability, and migration, and mechanistically increases stability of angiomotin-like proteins and perturbs YAP1/TAZ-TEAD transcriptional output, implying that systemic tankyrase inhibition could have endothelial side effects relevant to translational development. (OpenTargets Search: -TNKS)

5) Inhibitors, applications, and real-world implementation

5.1 Tool and lead inhibitors (biochemical potency and selectivity)

A 2024 preprint describing use of XAV939 in a stem-cell reprogramming context highlights selectivity limitations: XAV939 is reported to inhibit TNKS with IC50 ~5.2–94.6 nM, but also inhibits PARP1/2 with IC50 ~26.9–169 nM, and in that system globally inhibited TNKS- and PARP1-mediated PARylation. (zimmerlin2024proteogenomicreprogrammingto pages 3-5)

5.2 Dual PARP/TNKS inhibitors and TNKS engagement by clinical PARP inhibitors

A medicinal-chemistry review (2026; included here for quantitative drug data not otherwise present in 2023–2024 excerpts) reports:
- Talazoparib binding to TNKS1 with Kd = 14 nM (SPR), supporting the concept that some clinical PARP inhibitors may engage tankyrase at relevant exposures. (yang2026antitumoractivityand pages 47-49)
- Stenoparib as a dual inhibitor with PARP1/2 IC50 = 1.0–1.2 nM and TNKS1/2 IC50 = 50–120 nM. (yang2026antitumoractivityand pages 44-47)

These data are useful for interpreting on-/off-target effects when PARP inhibitors are used in contexts where tankyrase biology matters (e.g., Wnt output). (yang2026antitumoractivityand pages 44-47)

5.3 Clinical trial landscape (selective TNKS vs dual inhibitors)

ClinicalTrials.gov metadata retrieved here indicate that clinical translation of tankyrase inhibition is emerging but still relatively early:
- RK-582: a dedicated tankyrase inhibitor trial in unresectable metastatic colorectal cancer (Phase 1, recruiting; planned enrollment 48; NCT06853496; URL: https://clinicaltrials.gov/study/NCT06853496). (trial metadata in tool output)
- Dual PARP/tankyrase programs exist (e.g., E7449; JPI-547) but are not selective TNKS1 interventions. (yang2026antitumoractivityand pages 47-49)

6) Disease associations and genetics (supporting context)

OpenTargets associates TNKS with broad disease categories including cancer, with supporting literature links, though this evidence is aggregated and not a mechanistic substitute for primary studies. (OpenTargets Search: -TNKS)

7) Summary evidence table

The table below consolidates the most relevant mechanistic and translational evidence extracted from the retrieved sources.

Topic Key findings (1-2 sentences) Quantitative data (IC50/Kd, fold-changes, n, etc.) Source (first author, journal, publication date) URL
Identity/domains Human TNKS corresponds to tankyrase-1/PARP5A/ARTD5, a PARP-family ADP-ribosyltransferase. Domain architecture includes an N-terminal HPS region, ankyrin repeat domain organized into five ARCs for TBM-dependent substrate recognition, a SAM oligomerization domain, and a C-terminal PARP catalytic domain; TNKS1 localizes with telomeres (TRF1), spindle poles (NuMA), and GLUT4 vesicles (IRAP) (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 29-34, perrard2023multiplee3ligases media 2e6d286a). TNKS1 schematic spans residues 1–999 (HPS-Ankyrin) and 1000–1327 (SAM-PARP catalytic region); ARC3 lacks a TBM-binding pocket; TNKS PAR chains average ~20 ADP-ribose units (defo2024astructuraland pages 29-34, perrard2023multiplee3ligases media 2e6d286a). Perrard, Nature Communications, 2023-11; Defo, unknown journal, 2024 https://doi.org/10.1038/s41467-023-42939-3
Enzymatic reaction TNKS1 uses NAD+ as substrate/cofactor to transfer ADP-ribose onto itself and binding partners, producing MAR/PAR and functioning as a poly(ADP-ribose) polymerase. It preferentially modifies acidic residues (Glu/Asp), contains an HYE catalytic triad, and the zinc-binding motif supports structural integrity of the catalytic acceptor site (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 19-22, defo2024astructuraland pages 29-34). NAD+ donor usage explicitly stated; preferred acceptors are glutamate/aspartate; zinc-motif mutation rendered TNKS1 inactive in one structural/biochemical study (defo2024astructuraland pages 19-22, defo2024astructuraland pages 29-34). Perrard, Nature Communications, 2023-11; Defo, unknown journal, 2024; Sowa, Open Biology, 2022-03 https://doi.org/10.1038/s41467-023-42939-3
Key substrates & pathways Major substrates/pathways include AXIN1/2 in Wnt/β-catenin signaling, where TNKS PARylation promotes AXIN degradation and β-catenin stabilization; AMOT family proteins in Hippo/YAP signaling; NuMA in mitotic spindle organization; and telomere-associated factors such as TRF1 in telomere biology (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 19-22, ma2024investigationonendothelial pages 19-23). Recent work also links TNKS to peroxisome homeostasis through PEX14-associated signaling that intersects with Wnt output (zimmerlin2025proteogenomicreprogrammingto pages 35-36). TNKS1 is specifically required for NuMA PARylation in one cited structural study; AMOT PARylation sites reported as D506, E513, E516, and E528 in CRC-related work (defo2024astructuraland pages 19-22, ma2024investigationonendothelial pages 19-23). Perrard, Nature Communications, 2023-11; Li, Cell Death & Disease, 2024-03; Vu, Journal of Cell Biology, 2024-07 https://doi.org/10.1038/s41467-023-42939-3
Regulation via ubiquitin E3 ligases RNF146 is a PAR-directed E3 ligase that binds PARylated TNKS and substrates via a WWE domain and promotes K48-linked polyubiquitylation/proteasomal degradation, central to PAR-dependent ubiquitylation (PARdU). RING-UIM ligases RNF114 and RNF166 instead stabilize mono-ubiquitylated TNKS and promote K11-linked diubiquitylation that opposes RNF146-mediated degradation (perrard2023multiplee3ligases pages 1-2, perrard2023multiplee3ligases pages 2-4, perrard2023multiplee3ligases media 2e6d286a). RNF114/166 increased TNKS protein ~2–3-fold and PAR-TNKS ~2-fold; effects required catalytically active TNKS1 and were measured with at least 3 independent replicates in the study summary (perrard2023multiplee3ligases pages 2-4). Perrard, Nature Communications, 2023-11; Jessop, Biochemical Journal, 2024-08 https://doi.org/10.1038/s41467-023-42939-3
Inhibitors & potency XAV939 is a widely used catalytic-site TNKS inhibitor that stabilizes AXIN and suppresses Wnt signaling but is not fully selective, also inhibiting PARP1/2. Other translationally relevant TNKS inhibitors include G007-LK, RK-582, WIKI4, and dual PARP/TNKS compounds such as stenoparib and JPI-547; talazoparib also shows measurable TNKS1 binding in SPR (zimmerlin2024proteogenomicreprogrammingto pages 3-5, yang2026antitumoractivityand pages 47-49, yang2026antitumoractivityand pages 44-47). XAV939 reported IC50 range ~5.2–94.6 nM for TNKS and ~26.9–169 nM for PARP1/2; talazoparib TNKS1 Kd = 14 nM; stenoparib PARP1/2 IC50 = 1.0–1.2 nM and TNKS1/2 IC50 = 50–120 nM; dual inhibitor examples: compound 169 TNKS1/2 IC50 39.0/14.0 nM and compound 172 TNKS1/2 IC50 13.5/4.15 nM (zimmerlin2024proteogenomicreprogrammingto pages 3-5, yang2026antitumoractivityand pages 47-49, yang2026antitumoractivityand pages 44-47). Zimmerlin, bioRxiv, 2024-06; Yang, J Enzyme Inhib Med Chem, 2026-12 https://doi.org/10.1101/2024.06.14.598510
Translational/real-world applications TNKS inhibition is being explored in cancer, endothelial biology, osteoarthritis-related chondrocyte responses, stem-cell differentiation, and drug-resistance prevention. Recent 2024 studies showed TNKS1/2 inhibition suppresses ALK inhibitor-tolerant persister cells in NSCLC, helps define sensitive colorectal cancer patient-derived cells, and improves endocrine commitment of hPSC-derived pancreatic progenitors (ma2024investigationonendothelial pages 84-86, zimmerlin2025proteogenomicreprogrammingto pages 35-36, yang2026antitumoractivityand pages 62-63). ALK+ NSCLC study screened 3,114 compounds and found TNKS1/2 inhibitors among top classes; CRC biomarker study used 47 patient-derived cells; pancreatic differentiation study reported group sizes such as n=5 (DMSO), n=3 (XAV939/JW74), n=6 (WIKI4/JW55), n=7 (G007-LK), n=8 (NA) in cited snippet (yang2026antitumoractivityand pages 62-63). Fujimura, NPJ Precision Oncology, 2024-11; Chen, British Journal of Cancer, 2024-11; Poon, Nature Communications, 2024-10; Ma, Naunyn-Schmiedeberg's Arch Pharmacol, 2024-09 https://doi.org/10.1038/s41698-024-00757-w
Clinical trials Tankyrase-directed clinical translation remains early, but a dedicated TNKS inhibitor trial is underway with RK-582 in unresectable metastatic colorectal cancer. Broader dual PARP/TNKS clinical activity is also represented by agents such as E7449 and JPI-547, though these are not selective TNKS1-only interventions (yang2026antitumoractivityand pages 47-49, yang2026antitumoractivityand pages 44-47). RK-582 phase I trial NCT06853496 is recruiting with planned enrollment 48; JPI-547 phase II ovarian study enrollment 58; E7449 phase I/II completed with enrollment 41 (yang2026antitumoractivityand pages 47-49, yang2026antitumoractivityand pages 44-47). ClinicalTrials.gov entries summarized in tool output; Yang, J Enzyme Inhib Med Chem, 2026-12 https://clinicaltrials.gov/study/NCT06853496

Table: This table summarizes key evidence for human TNKS/tankyrase-1, including identity, catalytic function, pathways, regulatory ligases, inhibitor data, and translational progress. It is useful as a compact evidence map anchored to the retrieved context and recent literature.

8) Limitations of the present evidence set

  • Several highly authoritative, TNKS-focused reviews (e.g., specific 2023 reviews on tankyrase as a pleiotropic drug target) were flagged as unobtainable by the search system; therefore, some synthesis relies on the best available 2023–2024 primary papers plus a focused 2023 mechanistic study and a 2024 regulatory review. (yang2026antitumoractivityand pages 62-63, perrard2023multiplee3ligases pages 1-2)
  • Quantitative enzymology for TNKS1 (e.g., detailed kinetic parameters) was limited in the retrieved excerpts; the report therefore emphasizes reaction type, NAD+ dependence, acceptor preference, and pathway-linked consequences as supported by available evidence. (defo2024astructuraland pages 29-34, perrard2023multiplee3ligases pages 1-2)

Key take-home points

  1. Primary molecular function: TNKS1 is an NAD+-dependent PARP-family enzyme that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent ubiquitination and turnover. (perrard2023multiplee3ligases pages 1-2, defo2024astructuraland pages 29-34)
  2. Primary pathway role: TNKS1/2 control Wnt/β-catenin signaling by PARylating AXIN1/2 to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses β-catenin output. (ma2024investigationonendothelial pages 19-23, defo2024astructuraland pages 19-22)
  3. Regulatory complexity: TNKS stability and signaling outputs are tuned by multiple PAR-binding E3 ligases, including RNF146 (degradative K48 ubiquitination) and RING-UIM ligases RNF114/RNF166 (stabilizing K11 ubiquitination). (perrard2023multiplee3ligases pages 1-2, perrard2023multiplee3ligases pages 2-4)
  4. 2024 translational signals: TNKS inhibition is being leveraged in drug tolerance/resistance (ALK+ NSCLC persisters), CRC patient-derived model stratification, and stem-cell differentiation protocols, highlighting real-world implementation beyond classical Wnt pathway biochemistry. (yang2026antitumoractivityand pages 62-63)

References

  1. (perrard2023multiplee3ligases pages 1-2): Jerome Perrard and Susan Smith. Multiple e3 ligases control tankyrase stability and function. Nature Communications, Nov 2023. URL: https://doi.org/10.1038/s41467-023-42939-3, doi:10.1038/s41467-023-42939-3. This article has 24 citations and is from a highest quality peer-reviewed journal.

  2. (ma2024investigationonendothelial pages 19-23): N Ma. Investigation on endothelial junctional remodeling by the tankyrase inhibitor xav939. Unknown journal, 2024.

  3. (defo2024astructuraland pages 19-22): A Kuate Defo. A structural and functional analysis of the human tankyrase enzyme. Unknown journal, 2024.

  4. (defo2024astructuraland pages 29-34): A Kuate Defo. A structural and functional analysis of the human tankyrase enzyme. Unknown journal, 2024.

  5. (perrard2023multiplee3ligases media 2e6d286a): Jerome Perrard and Susan Smith. Multiple e3 ligases control tankyrase stability and function. Nature Communications, Nov 2023. URL: https://doi.org/10.1038/s41467-023-42939-3, doi:10.1038/s41467-023-42939-3. This article has 24 citations and is from a highest quality peer-reviewed journal.

  6. (perrard2023multiplee3ligases pages 2-4): Jerome Perrard and Susan Smith. Multiple e3 ligases control tankyrase stability and function. Nature Communications, Nov 2023. URL: https://doi.org/10.1038/s41467-023-42939-3, doi:10.1038/s41467-023-42939-3. This article has 24 citations and is from a highest quality peer-reviewed journal.

  7. (perrard2023multiplee3ligases media 9dbede60): Jerome Perrard and Susan Smith. Multiple e3 ligases control tankyrase stability and function. Nature Communications, Nov 2023. URL: https://doi.org/10.1038/s41467-023-42939-3, doi:10.1038/s41467-023-42939-3. This article has 24 citations and is from a highest quality peer-reviewed journal.

  8. (zimmerlin2025proteogenomicreprogrammingto pages 35-36): Ludovic Zimmerlin, Ariana Angarita, Tea Soon Park, Rebecca Evans-Moses, Justin Thomas, Sirui Yan, Isabel Uribe, Isabella Vegas, Clara Kochendoerfer, Willem Buys, Anthony K.L. Leung, and Elias T. Zambidis. Proteogenomic reprogramming to a functional human blastomere-like stem cell state via a parp-dux4 regulatory axis. Cell reports, 44 5:115671, May 2025. URL: https://doi.org/10.1016/j.celrep.2025.115671, doi:10.1016/j.celrep.2025.115671. This article has 2 citations and is from a highest quality peer-reviewed journal.

  9. (yang2026antitumoractivityand pages 62-63): Chunhui Yang, Yunpeng Shang, Xin Li, Jingjing Li, Hai Li, and Jicheng Han. Antitumor activity and structure–activity relationship of poly (adp-ribose) polymerase (parp)-based dual inhibitors. Journal of Enzyme Inhibition and Medicinal Chemistry, Dec 2026. URL: https://doi.org/10.1080/14756366.2025.2598478, doi:10.1080/14756366.2025.2598478. This article has 0 citations and is from a peer-reviewed journal.

  10. (OpenTargets Search: -TNKS): Open Targets Query (-TNKS, 7 results). Buniello, A. et al. (2025). Open Targets Platform: facilitating therapeutic hypotheses building in drug discovery. Nucleic Acids Research.

  11. (zimmerlin2024proteogenomicreprogrammingto pages 3-5): Ludovic Zimmerlin, Ariana Angarita, T. Park, Rebecca Evans-Moses, Justin Thomas, Sirui Yan, Isabel Uribe, Isabella Vegas, Clara Kochendoerfer, Willem Buys, Anthony K. L. Leung, and Elias T. Zambidis. Proteogenomic reprogramming to a functional human totipotent stem cell state via a parp-dux4 regulatory axis. bioRxiv, Jun 2024. URL: https://doi.org/10.1101/2024.06.14.598510, doi:10.1101/2024.06.14.598510. This article has 0 citations.

  12. (yang2026antitumoractivityand pages 47-49): Chunhui Yang, Yunpeng Shang, Xin Li, Jingjing Li, Hai Li, and Jicheng Han. Antitumor activity and structure–activity relationship of poly (adp-ribose) polymerase (parp)-based dual inhibitors. Journal of Enzyme Inhibition and Medicinal Chemistry, Dec 2026. URL: https://doi.org/10.1080/14756366.2025.2598478, doi:10.1080/14756366.2025.2598478. This article has 0 citations and is from a peer-reviewed journal.

  13. (yang2026antitumoractivityand pages 44-47): Chunhui Yang, Yunpeng Shang, Xin Li, Jingjing Li, Hai Li, and Jicheng Han. Antitumor activity and structure–activity relationship of poly (adp-ribose) polymerase (parp)-based dual inhibitors. Journal of Enzyme Inhibition and Medicinal Chemistry, Dec 2026. URL: https://doi.org/10.1080/14756366.2025.2598478, doi:10.1080/14756366.2025.2598478. This article has 0 citations and is from a peer-reviewed journal.

  14. (ma2024investigationonendothelial pages 84-86): N Ma. Investigation on endothelial junctional remodeling by the tankyrase inhibitor xav939. Unknown journal, 2024.

Citations

  1. defo2024astructuraland pages 29-34
  2. zimmerlin2025proteogenomicreprogrammingto pages 35-36
  3. defo2024astructuraland pages 19-22
  4. yang2026antitumoractivityand pages 62-63
  5. zimmerlin2024proteogenomicreprogrammingto pages 3-5
  6. yang2026antitumoractivityand pages 47-49
  7. yang2026antitumoractivityand pages 44-47
  8. ma2024investigationonendothelial pages 19-23
  9. ma2024investigationonendothelial pages 84-86
  10. ADP-ribose
  11. https://clinicaltrials.gov/study/NCT06853496
  12. https://doi.org/10.1038/s41467-023-42939-3
  13. https://doi.org/10.1101/2024.06.14.598510
  14. https://doi.org/10.1038/s41698-024-00757-w
  15. https://doi.org/10.1038/s41467-023-42939-3,
  16. https://doi.org/10.1016/j.celrep.2025.115671,
  17. https://doi.org/10.1080/14756366.2025.2598478,
  18. https://doi.org/10.1101/2024.06.14.598510,

📄 View Raw YAML

id: O95271
gene_symbol: TNKS
product_type: PROTEIN
status: COMPLETE
taxon:
  id: NCBITaxon:9606
  label: Homo sapiens
description: 'TNKS encodes tankyrase-1/PARP5A, a multidomain NAD+-dependent ADP-ribosyltransferase that
  recognizes substrate proteins through ankyrin-repeat clusters and catalyzes protein poly- and auto-ADP-ribosylation.
  Its core functions include PARylation-dependent control of AXIN turnover and Wnt/beta-catenin signaling,
  telomere-associated TRF1 biology, and NuMA-dependent spindle organization, with activity distributed
  across cytoplasmic, nuclear/telomeric, and spindle-associated compartments.'
existing_annotations:
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: &id004
    - &id012
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
    - &id013
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate
        acceptor sites; a structural/functional synthesis in the retrieved literature notes
        **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic
        features including an **HYE catalytic triad** and a catalytic acceptor-site architecture
        containing a **CHCC-type zinc-binding motif** important for structural integrity of the
        acceptor site.
    - &id014
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Primary molecular function:** TNKS1 is an **NAD+-dependent PARP-family enzyme**
        that PARylates itself and protein partners, frequently acting as a switch to trigger PAR-dependent
        ubiquitination and turnover.'
- term:
    id: GO:0005634
    label: nucleus
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: nucleus localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: &id001
    - &id005
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'The retrieved evidence supports a “multi-compartment” view of TNKS localization
        via partner-mediated recruitment:'
    - &id006
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
- term:
    id: GO:0005737
    label: cytoplasm
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: cytoplasm localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0070198
    label: protein localization to chromosome, telomeric region
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: protein localization to chromosome, telomeric region is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: &id002
    - &id011
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - &id015
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with
        roles in telomere biology).'
- term:
    id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway
      output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: &id007
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**,
        which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN.
        Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and
        increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces
        cytosolic β-catenin and β-catenin–dependent transcription.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Primary pathway role:** TNKS1/2 control **Wnt/β-catenin signaling** by PARylating
        **AXIN1/2** to promote RNF146-dependent degradation; inhibition stabilizes AXIN and suppresses
        β-catenin output.'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3**
        that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose)
        and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This
        underlies a major mechanism by which TNKS controls the abundance of multiple signaling
        proteins.
- term:
    id: GO:1904355
    label: positive regulation of telomere capping
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: positive regulation of telomere capping is supported as a TNKS telomere-associated
      role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0000139
    label: Golgi membrane
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: Golgi membrane is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0000209
    label: protein polyubiquitination
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but
      misstates the direct TNKS activity.
    action: MODIFY
    reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then
      recognized by PAR-binding ubiquitin ligases such as RNF146.
    proposed_replacement_terms: &id018
    - id: GO:0070212
      label: protein poly-ADP-ribosylation
    - id: GO:0003950
      label: NAD+ poly-ADP-ribosyltransferase activity
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3**
        that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose)
        and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This
        underlies a major mechanism by which TNKS controls the abundance of multiple signaling
        proteins.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**,
        which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN.
        Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and
        increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces
        cytosolic β-catenin and β-catenin–dependent transcription.
- term:
    id: GO:0000242
    label: pericentriolar material
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: pericentriolar material localization is supported by TNKS spindle/centrosome-associated
      functions.
    action: ACCEPT
    reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and
      spindle organization.
    supported_by: &id003
    - &id009
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: TNKS also targets proteins involved in mitosis. A structural/functional
        analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states
        that **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct
        mitotic spindle organization.
    - &id010
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
- term:
    id: GO:0000781
    label: chromosome, telomeric region
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
    action: ACCEPT
    reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
    supported_by: *id002
- term:
    id: GO:0000922
    label: spindle pole
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: spindle pole localization is supported by TNKS spindle/centrosome-associated functions.
    action: ACCEPT
    reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and
      spindle organization.
    supported_by: *id003
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005635
    label: nuclear envelope
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: nuclear envelope is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0005643
    label: nuclear pore
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: nuclear pore is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0005737
    label: cytoplasm
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: cytoplasm localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005813
    label: centrosome
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: centrosome localization is supported by TNKS spindle/centrosome-associated functions.
    action: ACCEPT
    reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and
      spindle organization.
    supported_by: *id003
- term:
    id: GO:0015031
    label: protein transport
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: protein transport is a context-specific transport-related role rather than the primary
      TNKS function.
    action: KEEP_AS_NON_CORE
    reason: Transport annotations are secondary to TNKS substrate PARylation and pathway regulation.
    supported_by:
    - *id005
    - *id006
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
- term:
    id: GO:0016055
    label: Wnt signaling pathway
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: Wnt signaling pathway is a canonical TNKS pathway output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: *id007
- term:
    id: GO:0016740
    label: transferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: transferase activity is too broad for TNKS catalytic activity.
    action: MODIFY
    reason: The supported activity is NAD+-dependent protein
      ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
    proposed_replacement_terms: &id008
    - id: GO:0003950
      label: NAD+ poly-ADP-ribosyltransferase activity
    - id: GO:0140806
      label: NAD+-protein-aspartate ADP-ribosyltransferase activity
    - id: GO:0140807
      label: NAD+-protein-glutamate ADP-ribosyltransferase activity
    supported_by: *id004
- term:
    id: GO:0016757
    label: glycosyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: glycosyltransferase activity is too broad for TNKS catalytic activity.
    action: MODIFY
    reason: The supported activity is NAD+-dependent protein
      ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
    proposed_replacement_terms: *id008
    supported_by: *id004
- term:
    id: GO:0016779
    label: nucleotidyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: nucleotidyltransferase activity is too broad for TNKS catalytic activity.
    action: MODIFY
    reason: The supported activity is NAD+-dependent protein
      ADP-ribosyltransferase/poly-ADP-ribosyltransferase activity, not a generic transferase label.
    proposed_replacement_terms: *id008
    supported_by: *id004
- term:
    id: GO:0032212
    label: positive regulation of telomere maintenance via telomerase
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0046872
    label: metal ion binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: metal ion binding is plausible as a structural/catalytic-site feature but is not the
      main function.
    action: KEEP_AS_NON_CORE
    reason: Recent structural synthesis supports a zinc-binding motif in the catalytic acceptor-site
      architecture, but the core molecular function is ADP-ribosyltransferase activity.
    supported_by: &id019
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate
        acceptor sites; a structural/functional synthesis in the retrieved literature notes
        **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic
        features including an **HYE catalytic triad** and a catalytic acceptor-site architecture
        containing a **CHCC-type zinc-binding motif** important for structural integrity of the
        acceptor site.
- term:
    id: GO:0051028
    label: mRNA transport
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: mRNA transport is a context-specific transport-related role rather than the primary
      TNKS function.
    action: KEEP_AS_NON_CORE
    reason: Transport annotations are secondary to TNKS substrate PARylation and pathway regulation.
    supported_by:
    - *id005
    - *id006
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
- term:
    id: GO:0051301
    label: cell division
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: cell division is supported as a mitotic or telomere-cohesion output of TNKS activity.
    action: KEEP_AS_NON_CORE
    reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA
      or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
    supported_by:
    - *id009
    - *id010
    - *id011
- term:
    id: GO:0070198
    label: protein localization to chromosome, telomeric region
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: protein localization to chromosome, telomeric region is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0070212
    label: protein poly-ADP-ribosylation
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:0070213
    label: protein auto-ADP-ribosylation
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: protein auto-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway
      output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: *id007
- term:
    id: GO:0140806
    label: NAD+-protein-aspartate ADP-ribosyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000116
  review:
    summary: NAD+-protein-aspartate ADP-ribosyltransferase activity is a core TNKS catalytic
      molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0140807
    label: NAD+-protein-glutamate ADP-ribosyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000116
  review:
    summary: NAD+-protein-glutamate ADP-ribosyltransferase activity is a core TNKS catalytic
      molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:1904355
    label: positive regulation of telomere capping
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: positive regulation of telomere capping is supported as a TNKS telomere-associated
      role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:1904357
    label: negative regulation of telomere maintenance via telomere lengthening
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: Negative regulation of telomere maintenance via telomere lengthening is not justified
      by the current TNKS synthesis.
    action: MARK_AS_OVER_ANNOTATED
    reason: Canonical TNKS/TRF1 evidence supports release of TRF1 from telomeres and promotion of
      telomere elongation; the negative-direction annotation should not be accepted without
      context-specific evidence.
    proposed_replacement_terms:
    - id: GO:1904358
      label: positive regulation of telomere maintenance via telomere lengthening
    - id: GO:0032212
      label: positive regulation of telomere maintenance via telomerase
    supported_by:
    - &id016
      reference_id: PMID:12782650
      supporting_text: ADP-ribosylation of TRF1 by tankyrase 1 released TRF1 from telomeres and
        promoted telomere elongation.
    - &id017
      reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with
        roles in telomere biology).'
- term:
    id: GO:1990404
    label: NAD+-protein mono-ADP-ribosyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular
      function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:12080061
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:14596906
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:17003112
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:17043677
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:19759537
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:20696165
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:21251231
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:21799911
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:22699936
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:25327252
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:26373281
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:26496610
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:26972000
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:28514442
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:31413325
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:32296183
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:33961781
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:40205054
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-4641257
  review:
    summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway
      output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: *id007
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640858
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-8948800
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0010521
    label: telomerase inhibitor activity
  evidence_type: IMP
  original_reference_id: PMID:25939383
  review:
    summary: Telomerase inhibitor activity is not the best direct molecular-function description for
      TNKS.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS regulates telomere maintenance through PARylation of telomere-associated proteins
      such as TRF1; the direct activity should be represented as ADP-ribosyltransferase activity and
      telomere-maintenance processes.
    proposed_replacement_terms: *id008
    supported_by:
    - *id012
    - *id013
    - *id014
    - *id011
    - *id015
- term:
    id: GO:0010521
    label: telomerase inhibitor activity
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: Telomerase inhibitor activity is not the best direct molecular-function description for
      TNKS.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS regulates telomere maintenance through PARylation of telomere-associated proteins
      such as TRF1; the direct activity should be represented as ADP-ribosyltransferase activity and
      telomere-maintenance processes.
    proposed_replacement_terms: *id008
    supported_by:
    - *id012
    - *id013
    - *id014
    - *id011
    - *id015
- term:
    id: GO:0032210
    label: regulation of telomere maintenance via telomerase
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: regulation of telomere maintenance via telomerase is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:1904358
    label: positive regulation of telomere maintenance via telomere lengthening
  evidence_type: IDA
  original_reference_id: PMID:12782650
  review:
    summary: positive regulation of telomere maintenance via telomere lengthening is supported as a
      TNKS telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:1990404
    label: NAD+-protein mono-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:15133513
  review:
    summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular
      function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:1990404
    label: NAD+-protein mono-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular
      function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0070212
    label: protein poly-ADP-ribosylation
  evidence_type: IDA
  original_reference_id: PMID:25043379
  review:
    summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:1990404
    label: NAD+-protein mono-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:25043379
  review:
    summary: NAD+-protein mono-ADP-ribosyltransferase activity is a core TNKS catalytic molecular
      function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:16076287
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:16076287
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0070212
    label: protein poly-ADP-ribosylation
  evidence_type: IDA
  original_reference_id: PMID:16076287
  review:
    summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:0097431
    label: mitotic spindle pole
  evidence_type: IDA
  original_reference_id: PMID:16076287
  review:
    summary: mitotic spindle pole localization is supported by TNKS spindle/centrosome-associated
      functions.
    action: ACCEPT
    reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and
      spindle organization.
    supported_by: *id003
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:11854288
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:11854288
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:1904908
    label: negative regulation of maintenance of mitotic sister chromatid cohesion, telomeric
  evidence_type: IMP
  original_reference_id: PMID:26373281
  review:
    summary: negative regulation of maintenance of mitotic sister chromatid cohesion, telomeric is
      supported as a mitotic or telomere-cohesion output of TNKS activity.
    action: KEEP_AS_NON_CORE
    reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA
      or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
    supported_by:
    - *id009
    - *id010
    - *id011
- term:
    id: GO:0000781
    label: chromosome, telomeric region
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
    action: ACCEPT
    reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
    supported_by: *id002
- term:
    id: GO:0042393
    label: histone binding
  evidence_type: IPI
  original_reference_id: PMID:26373281
  review:
    summary: Histone binding is supported in a telomere-cohesion context but is secondary to TNKS
      ADP-ribosyltransferase function.
    action: KEEP_AS_NON_CORE
    reason: This interaction fits a specialized telomere/chromatin context rather than the primary
      TNKS catalytic function.
    supported_by:
    - reference_id: PMID:26373281
      supporting_text: In the absence of ATRX, the histone variant macroH2A1.1 binds to the
        poly(ADP-ribose) polymerase tankyrase 1, preventing it from localizing to telomeres and
        resolving cohesion.
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:15133513
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0032212
    label: positive regulation of telomere maintenance via telomerase
  evidence_type: IDA
  original_reference_id: PMID:12782650
  review:
    summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0070198
    label: protein localization to chromosome, telomeric region
  evidence_type: IMP
  original_reference_id: PMID:15133513
  review:
    summary: protein localization to chromosome, telomeric region is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0070212
    label: protein poly-ADP-ribosylation
  evidence_type: IMP
  original_reference_id: PMID:25939383
  review:
    summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:0070212
    label: protein poly-ADP-ribosylation
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: protein poly-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:1904357
    label: negative regulation of telomere maintenance via telomere lengthening
  evidence_type: IMP
  original_reference_id: PMID:25939383
  review:
    summary: Negative regulation of telomere maintenance via telomere lengthening is not justified
      by the current TNKS synthesis.
    action: MARK_AS_OVER_ANNOTATED
    reason: Canonical TNKS/TRF1 evidence supports release of TRF1 from telomeres and promotion of
      telomere elongation; the negative-direction annotation should not be accepted without
      context-specific evidence.
    proposed_replacement_terms:
    - id: GO:1904358
      label: positive regulation of telomere maintenance via telomere lengthening
    - id: GO:0032212
      label: positive regulation of telomere maintenance via telomerase
    supported_by:
    - *id016
    - *id017
- term:
    id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  evidence_type: IMP
  original_reference_id: PMID:25939383
  review:
    summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway
      output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: *id007
- term:
    id: GO:1904355
    label: positive regulation of telomere capping
  evidence_type: IMP
  original_reference_id: PMID:25939383
  review:
    summary: positive regulation of telomere capping is supported as a TNKS telomere-associated
      role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:21270334
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640844
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640858
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640861
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640862
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640872
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-3640874
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-5262606
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: TAS
  original_reference_id: Reactome:R-HSA-8948800
  review:
    summary: cytosol localization is consistent with TNKS multi-compartment activity.
    action: ACCEPT
    reason: TNKS acts in nuclear/telomeric and cytoplasmic signaling contexts, including Wnt pathway
      regulation.
    supported_by: *id001
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:22864114
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:22864114
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0005794
    label: Golgi apparatus
  evidence_type: IDA
  original_reference_id: PMID:22864114
  review:
    summary: Golgi apparatus is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0045944
    label: positive regulation of transcription by RNA polymerase II
  evidence_type: IDA
  original_reference_id: PMID:19245366
  review:
    summary: Positive regulation of transcription by RNA polymerase II is an indirect
      Wnt/beta-catenin or YAP pathway output.
    action: KEEP_AS_NON_CORE
    reason: TNKS regulates transcriptional outputs indirectly by PARylating pathway regulators such
      as AXIN rather than functioning as a transcription factor.
    supported_by: *id007
- term:
    id: GO:0000209
    label: protein polyubiquitination
  evidence_type: IDA
  original_reference_id: PMID:19759537
  review:
    summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but
      misstates the direct TNKS activity.
    action: MODIFY
    reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then
      recognized by PAR-binding ubiquitin ligases such as RNF146.
    proposed_replacement_terms: *id018
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3**
        that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose)
        and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This
        underlies a major mechanism by which TNKS controls the abundance of multiple signaling
        proteins.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**,
        which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN.
        Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and
        increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces
        cytosolic β-catenin and β-catenin–dependent transcription.
- term:
    id: GO:0000209
    label: protein polyubiquitination
  evidence_type: IDA
  original_reference_id: PMID:21478859
  review:
    summary: Protein polyubiquitination captures a downstream consequence of TNKS PARylation but
      misstates the direct TNKS activity.
    action: MODIFY
    reason: TNKS does not function as the E3 ubiquitin ligase; it PARylates substrates that are then
      recognized by PAR-binding ubiquitin ligases such as RNF146.
    proposed_replacement_terms: *id018
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The canonical E3 ligase is **RNF146**, described as a **PAR-directed E3**
        that binds PARylated substrates (via a PAR-binding WWE domain recognizing iso-ADP-ribose)
        and installs **K48-linked polyubiquitin chains**, driving proteasomal degradation. This
        underlies a major mechanism by which TNKS controls the abundance of multiple signaling
        proteins.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**,
        which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN.
        Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and
        increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces
        cytosolic β-catenin and β-catenin–dependent transcription.
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:19759537
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:21478859
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:21478859
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0070213
    label: protein auto-ADP-ribosylation
  evidence_type: IDA
  original_reference_id: PMID:21478859
  review:
    summary: protein auto-ADP-ribosylation is a direct TNKS catalytic process.
    action: ACCEPT
    reason: TNKS catalyzes protein PARylation and auto-PARylation of itself and binding partners.
    supported_by: *id004
- term:
    id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  evidence_type: IMP
  original_reference_id: PMID:19759537
  review:
    summary: positive regulation of canonical Wnt signaling pathway is a canonical TNKS pathway
      output through AXIN PARylation.
    action: ACCEPT
    reason: TNKS PARylates AXIN1/2 to promote RNF146-dependent AXIN degradation, thereby increasing
      Wnt/beta-catenin pathway output.
    supported_by: *id007
- term:
    id: GO:0070198
    label: protein localization to chromosome, telomeric region
  evidence_type: IMP
  original_reference_id: PMID:18221737
  review:
    summary: protein localization to chromosome, telomeric region is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0000242
    label: pericentriolar material
  evidence_type: TAS
  original_reference_id: PMID:11454873
  review:
    summary: pericentriolar material localization is supported by TNKS spindle/centrosome-associated
      functions.
    action: ACCEPT
    reason: TNKS is recruited to spindle poles via NuMA and is required for NuMA PARylation and
      spindle organization.
    supported_by: *id003
- term:
    id: GO:0000781
    label: chromosome, telomeric region
  evidence_type: IDA
  original_reference_id: PMID:11739745
  review:
    summary: Chromosome telomeric region localization is supported by TNKS recruitment through TRF1.
    action: ACCEPT
    reason: Telomere recruitment is one of the hallmark TNKS localization contexts.
    supported_by: *id002
- term:
    id: GO:0005643
    label: nuclear pore
  evidence_type: TAS
  original_reference_id: PMID:11454873
  review:
    summary: nuclear pore is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0007052
    label: mitotic spindle organization
  evidence_type: TAS
  original_reference_id: PMID:17026964
  review:
    summary: mitotic spindle organization is supported as a mitotic or telomere-cohesion output of
      TNKS activity.
    action: KEEP_AS_NON_CORE
    reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA
      or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
    supported_by:
    - *id009
    - *id010
    - *id011
- term:
    id: GO:0008270
    label: zinc ion binding
  evidence_type: IDA
  original_reference_id: PMID:18436240
  review:
    summary: zinc ion binding is plausible as a structural/catalytic-site feature but is not the
      main function.
    action: KEEP_AS_NON_CORE
    reason: Recent structural synthesis supports a zinc-binding motif in the catalytic acceptor-site
      architecture, but the core molecular function is ADP-ribosyltransferase activity.
    supported_by: *id019
- term:
    id: GO:0031965
    label: nuclear membrane
  evidence_type: TAS
  original_reference_id: PMID:11454873
  review:
    summary: nuclear membrane is a plausible reported localization but not the dominant site of TNKS
      core activity.
    action: KEEP_AS_NON_CORE
    reason: TNKS has multi-compartment partner-mediated localization; the best-supported core
      locations are cytosol/cytoplasm, nucleus/telomeres, and spindle-associated sites.
    supported_by: *id001
- term:
    id: GO:0032212
    label: positive regulation of telomere maintenance via telomerase
  evidence_type: IMP
  original_reference_id: PMID:11739745
  review:
    summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0032212
    label: positive regulation of telomere maintenance via telomerase
  evidence_type: IDA
  original_reference_id: PMID:18221737
  review:
    summary: positive regulation of telomere maintenance via telomerase is supported as a TNKS
      telomere-associated role.
    action: ACCEPT
    reason: TNKS is recruited to telomeres through TRF1 and regulates telomere-associated protein
      localization and telomere maintenance/capping outputs.
    supported_by: *id002
- term:
    id: GO:0051225
    label: spindle assembly
  evidence_type: TAS
  original_reference_id: PMID:17026964
  review:
    summary: spindle assembly is supported as a mitotic or telomere-cohesion output of TNKS
      activity.
    action: KEEP_AS_NON_CORE
    reason: These cell-cycle phenotypes are downstream of TNKS PARylation of substrates such as NuMA
      or telomere-associated factors, but the core activity is ADP-ribosyltransferase activity.
    supported_by:
    - *id009
    - *id010
    - *id011
- term:
    id: GO:0018105
    label: peptidyl-serine phosphorylation
  evidence_type: IDA
  original_reference_id: PMID:17026964
  review:
    summary: peptidyl-serine phosphorylation is not supported as a TNKS catalytic activity.
    action: REMOVE
    reason: TNKS is an ADP-ribosyltransferase, not a protein kinase catalyzing serine or threonine
      phosphorylation.
    supported_by: *id004
- term:
    id: GO:0018107
    label: peptidyl-threonine phosphorylation
  evidence_type: IDA
  original_reference_id: PMID:17026964
  review:
    summary: peptidyl-threonine phosphorylation is not supported as a TNKS catalytic activity.
    action: REMOVE
    reason: TNKS is an ADP-ribosyltransferase, not a protein kinase catalyzing serine or threonine
      phosphorylation.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:12768206
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
- term:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  evidence_type: IDA
  original_reference_id: PMID:9822378
  review:
    summary: NAD+ poly-ADP-ribosyltransferase activity is a core TNKS catalytic molecular function.
    action: ACCEPT
    reason: TNKS is an NAD+-dependent PARP/ARTD enzyme that transfers ADP-ribose to itself and
      protein substrates, with acidic acceptor-residue specificity supported by recent structural
      synthesis.
    supported_by: *id004
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:9822378
  review:
    summary: Protein binding is supported but too generic for TNKS substrate recognition.
    action: MARK_AS_OVER_ANNOTATED
    reason: TNKS recognizes substrate proteins through ankyrin-repeat clusters and then catalyzes
      ADP-ribosylation; generic protein binding hides the enzymatic mechanism.
    supported_by:
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: The UniProt accession **O95271** corresponds to **human tankyrase-1**,
        encoded by **TNKS** (synonyms **PARP5A, ARTD5**). Recent literature explicitly distinguishes
        **tankyrase-1 (TNKS1/PARP5A/ARTD5)** from **tankyrase-2 (TNKS2/PARP5B/ARTD6)** and describes
        the expected multidomain architecture (HPS–ankyrin repeats/ARCs–SAM–PARP catalytic domain)
        and hallmark biology (Wnt/β-catenin via AXIN, telomere association via TRF1, spindle via
        NuMA, GLUT4 vesicles via IRAP), matching the UniProt-provided domain/family context.
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: 'Tankyrase-1 is a **multidomain “scaffold-enzyme”**:'
    - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
      supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
        that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
        protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
references:
- id: GO_REF:0000033
  title: Annotation inferences using phylogenetic trees
  findings: []
- id: GO_REF:0000043
  title: Gene Ontology annotation based on UniProtKB/Swiss-Prot keyword mapping
  findings: []
- id: GO_REF:0000044
  title: Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary
    mapping, accompanied by conservative changes to GO terms applied by UniProt
  findings: []
- id: GO_REF:0000107
  title: Automatic transfer of experimentally verified manual GO annotation data to orthologs using
    Ensembl Compara
  findings: []
- id: GO_REF:0000116
  title: Automatic Gene Ontology annotation based on Rhea mapping
  findings: []
- id: GO_REF:0000117
  title: Electronic Gene Ontology annotations created by ARBA machine learning models
  findings: []
- id: GO_REF:0000120
  title: Combined Automated Annotation using Multiple IEA Methods
  findings: []
- id: PMID:11454873
  title: TANK2, a new TRF1-associated poly(ADP-ribose) polymerase, causes rapid induction of cell
    death upon overexpression.
  findings: []
- id: PMID:11739745
  title: >-
    Role for the related poly(ADP-Ribose) polymerases tankyrase 1 and 2 at human
    telomeres.
  findings: []
- id: PMID:11854288
  title: The telomeric poly(ADP-ribose) polymerase, tankyrase 1, contains multiple binding sites for
    telomeric repeat binding factor 1 (TRF1) and a novel acceptor, 182-kDa tankyrase-binding protein
    (TAB182).
  findings: []
- id: PMID:12080061
  title: Identification of a tankyrase-binding motif shared by IRAP, TAB182, and human TRF1 but not
    mouse TRF1. NuMA contains this RXXPDG motif and is a novel tankyrase partner.
  findings: []
- id: PMID:12768206
  title: POT1 as a terminal transducer of TRF1 telomere length control.
  findings: []
- id: PMID:12782650
  title: TRF1 is degraded by ubiquitin-mediated proteolysis after release from telomeres.
  findings: []
- id: PMID:14596906
  title: The formin-binding protein 17, FBP17, binds via a TNKS binding motif to tankyrase, a
    protein involved in telomere maintenance.
  findings: []
- id: PMID:15133513
  title: TIN2 is a tankyrase 1 PARP modulator in the TRF1 telomere length control complex.
  findings: []
- id: PMID:16076287
  title: NuMA is a major acceptor of poly(ADP-ribosyl)ation by tankyrase 1 in mitosis.
  findings: []
- id: PMID:17003112
  title: Posttranslational hydroxylation of ankyrin repeats in IkappaB proteins by the
    hypoxia-inducible factor (HIF) asparaginyl hydroxylase, factor inhibiting HIF (FIH).
  findings: []
- id: PMID:17026964
  title: Mitotic phosphorylation of tankyrase, a PARP that promotes spindle assembly, by GSK3.
  findings: []
- id: PMID:17043677
  title: 'Disrupted in Schizophrenia 1 Interactome: evidence for the close connectivity of risk genes
    and a potential synaptic basis for schizophrenia.'
  findings: []
- id: PMID:18221737
  title: Telomere elongation by a mutant tankyrase 1 without TRF1 poly(ADP-ribosyl)ation.
  findings: []
- id: PMID:18436240
  title: Zinc binding catalytic domain of human tankyrase 1.
  findings: []
- id: PMID:19245366
  title: MYPT1, the targeting subunit of smooth-muscle myosin phosphatase, is a substrate for the
    asparaginyl hydroxylase factor inhibiting hypoxia-inducible factor (FIH).
  findings: []
- id: PMID:19759537
  title: Tankyrase inhibition stabilizes axin and antagonizes Wnt signalling.
  findings: []
- id: PMID:20696165
  title: Tankyrase-1 assembly to large protein complexes blocks its telomeric function.
  findings: []
- id: PMID:21251231
  title: Factor-inhibiting hypoxia-inducible factor (FIH) catalyses the post-translational
    hydroxylation of histidinyl residues within ankyrin repeat domains.
  findings: []
- id: PMID:21270334
  title: Poly(ADP-ribose) polymerase 3 (PARP3), a newcomer in cellular response to DNA damage and
    mitotic progression.
  findings: []
- id: PMID:21478859
  title: RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulates axin degradation and Wnt
    signalling.
  findings: []
- id: PMID:21799911
  title: Ubiquitin ligase RNF146 regulates tankyrase and Axin to promote Wnt signaling.
  findings: []
- id: PMID:22699936
  title: Tankyrase 1 regulates centrosome function by controlling CPAP stability.
  findings: []
- id: PMID:22864114
  title: Poly-ADP ribosylation of Miki by tankyrase-1 promotes centrosome maturation.
  findings: []
- id: PMID:25043379
  title: Family-wide analysis of poly(ADP-ribose) polymerase activity.
  findings: []
- id: PMID:25327252
  title: Allosteric activation of the RNF146 ubiquitin ligase by a poly(ADP-ribosyl)ation signal.
  findings: []
- id: PMID:25939383
  title: Disruption of Wnt/β-Catenin Signaling and Telomeric Shortening Are Inextricable
    Consequences of Tankyrase Inhibition in Human Cells.
  findings: []
- id: PMID:26373281
  title: Loss of ATRX Suppresses Resolution of Telomere Cohesion to Control Recombination in ALT
    Cancer Cells.
  findings: []
- id: PMID:26496610
  title: A human interactome in three quantitative dimensions organized by stoichiometries and
    abundances.
  findings: []
- id: PMID:26972000
  title: Substrate-Trapped Interactors of PHD3 and FIH Cluster in Distinct Signaling Pathways.
  findings: []
- id: PMID:28514442
  title: Architecture of the human interactome defines protein communities and disease networks.
  findings: []
- id: PMID:31413325
  title: HENA, heterogeneous network-based data set for Alzheimer's disease.
  findings: []
- id: PMID:32296183
  title: A reference map of the human binary protein interactome.
  findings: []
- id: PMID:33961781
  title: Dual proteome-scale networks reveal cell-specific remodeling of the human interactome.
  findings: []
- id: PMID:40205054
  title: Multimodal cell maps as a foundation for structural and functional genomics.
  findings: []
- id: PMID:9822378
  title: Tankyrase, a poly(ADP-ribose) polymerase at human telomeres.
  findings: []
- id: Reactome:R-HSA-3640844
  title: RNF146 binds RibC-AXIN:TNKS complex
  findings: []
- id: Reactome:R-HSA-3640858
  title: Tankyrase ADP-ribosylates AXIN
  findings: []
- id: Reactome:R-HSA-3640861
  title: RNF146 ubiquitinates ADP-ribosylated AXIN
  findings: []
- id: Reactome:R-HSA-3640862
  title: Tankyrase binds AXIN
  findings: []
- id: Reactome:R-HSA-3640872
  title: USP34 deubiquitinates AXIN1,AXIN2
  findings: []
- id: Reactome:R-HSA-3640874
  title: Ub-RibC-AXIN is degraded by the proteasome
  findings: []
- id: Reactome:R-HSA-4641257
  title: Degradation of AXIN
  findings: []
- id: Reactome:R-HSA-5262606
  title: XAV939 binds tankyrase to stabilize axin and inhibit WNT signaling
  findings: []
- id: Reactome:R-HSA-8948800
  title: TNKS and TNKS2 PARylate PTEN
  findings: []
- id: file:human/TNKS/TNKS-deep-research-falcon.md
  title: Falcon deep research synthesis for TNKS
  findings: []
core_functions:
- description: NAD+-dependent protein poly-ADP-ribosyltransferase activity that PARylates TNKS
    itself and substrate proteins such as AXIN, enabling PAR-dependent ubiquitination and pathway
    regulation.
  molecular_function:
    id: GO:0003950
    label: NAD+ poly-ADP-ribosyltransferase activity
  directly_involved_in:
  - id: GO:0070212
    label: protein poly-ADP-ribosylation
  - id: GO:0070213
    label: protein auto-ADP-ribosylation
  - id: GO:0090263
    label: positive regulation of canonical Wnt signaling pathway
  - id: GO:0070198
    label: protein localization to chromosome, telomeric region
  - id: GO:1904355
    label: positive regulation of telomere capping
  locations:
  - id: GO:0005829
    label: cytosol
  - id: GO:0005737
    label: cytoplasm
  - id: GO:0005634
    label: nucleus
  - id: GO:0000781
    label: chromosome, telomeric region
  - id: GO:0097431
    label: mitotic spindle pole
  supported_by:
  - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
    supporting_text: '**Tankyrase-1 (TNKS1)** is an **ADP-ribosyltransferase** of the PARP/ARTD family
      that **uses NAD+ as the substrate** to catalyze covalent transfer of ADP-ribose onto itself and
      protein binding partners, generating **poly(ADP-ribose) (PAR)** chains (i.e., PARylation).'
  - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
    supporting_text: Mechanistically, TNKS cleaves NAD+ and transfers ADP-ribose to substrate
      acceptor sites; a structural/functional synthesis in the retrieved literature notes
      **preference for acidic acceptor residues (Glu/Asp)** and describes canonical catalytic
      features including an **HYE catalytic triad** and a catalytic acceptor-site architecture
      containing a **CHCC-type zinc-binding motif** important for structural integrity of the
      acceptor site.
  - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
    supporting_text: Multiple retrieved sources state that **tankyrase PARylates AXIN (AXIN1/2)**,
      which promotes **RNF146-mediated ubiquitination** and **proteasomal degradation** of AXIN.
      Loss of AXIN destabilizes the destruction complex, thereby **stabilizing β-catenin** and
      increasing pathway output. Conversely, **tankyrase inhibition stabilizes AXIN** and reduces
      cytosolic β-catenin and β-catenin–dependent transcription.
  - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
    supporting_text: '**Telomeres**: recruitment via the telomeric factor **TRF1** (consistent with roles
      in telomere biology).'
  - reference_id: file:human/TNKS/TNKS-deep-research-falcon.md
    supporting_text: TNKS also targets proteins involved in mitosis. A structural/functional
      analysis in the retrieved corpus reports that **TNKS PARylates NuMA**, and further states that
      **TNKS1 (but not TNKS2)** is specifically required for NuMA PARylation and correct mitotic
      spindle organization.
proposed_new_terms: []
suggested_questions: []
suggested_experiments: []