Tert

Existing Annotations Review

GO Term	Evidence	Action	Reason
GO:0003720 telomerase activity	IBA GO_REF:0000033	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0007004 telomere maintenance via telomerase	IBA GO_REF:0000033	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0070034 telomerase RNA binding	IBA GO_REF:0000033	ACCEPT	Summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity. Reason: Specific, informative MF central to holoenzyme assembly and catalysis; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0000333 telomerase catalytic core complex	IBA GO_REF:0000033	ACCEPT	Summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase. Reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA). Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0042162 telomeric DNA binding	IBA GO_REF:0000033	ACCEPT	Summary: TERT binds the single-stranded telomeric DNA primer/3' chromosome terminus, with anchor sites holding primer nucleotides upstream of the RNA-DNA hybrid to support processive repeat addition. Reason: Specific DNA-binding MF for the telomeric primer substrate; core to catalysis. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0000723 telomere maintenance	IEA GO_REF:0000002	ACCEPT	Summary: Parent process capturing TERT's role in preserving telomere length and chromosome-end integrity. Retained as a faithful, if more general, statement of the core biological role. Reason: Correct core BP; broader parent of telomere maintenance via telomerase. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0000781 chromosome, telomeric region	IEA GO_REF:0000120	ACCEPT	Summary: Site of catalysis: TERT engages the telomeric region of chromosomes to add TTAGGG repeats. UniProt lists Chromosome, telomere as a subcellular location. Reason: Core CC; the telomere is where the catalytic reaction occurs. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003677 DNA binding	IEA GO_REF:0000120	KEEP AS NON CORE	Summary: TERT binds telomeric ssDNA primer; the generic DNA-binding term is correct but less informative than telomeric DNA binding and is keyword/electronic-derived. Reason: Correct but generic; specific telomeric DNA binding is the core term.
GO:0003720 telomerase activity	IEA GO_REF:0000120	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003964 RNA-directed DNA polymerase activity	IEA GO_REF:0000120	ACCEPT	Summary: Reverse transcriptase activity (EC 2.7.7.49) by which TERT copies the Terc RNA template into telomeric DNA. The conserved RT domain (residues 595-928) with catalytic Mg2+-binding Asp residues underlies telomerase action. Reason: Precise MF describing the reverse-transcriptase catalytic mechanism; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005634 nucleus	IEA GO_REF:0000120	ACCEPT	Summary: Principal compartment where TERT acts; nuclear import/retention is regulated by AKT phosphorylation and SHP2/PTPN11 dephosphorylation, positioning telomerase for chromosome-end extension. Reason: Core CC; nucleus is the canonical site of telomerase action. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005654 nucleoplasm	IEA GO_REF:0000120	KEEP AS NON CORE	Summary: TERT shows diffuse nucleoplasmic distribution; a subnuclear pool that is part of nuclear residence but not the specific telomere/nucleolar site of function. Reason: Nuclear subcompartment; non-core relative to telomere/nucleolus.
GO:0005730 nucleolus	IEA GO_REF:0000120	ACCEPT	Summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT. Reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005737 cytoplasm	IEA GO_REF:0000044	KEEP AS NON CORE	Summary: TERT shuttles to the cytoplasm under oxidative stress (CRM1/RAN-dependent, Tyr-697 phosphorylation), a regulated secondary localization rather than its catalytic site. Reason: Regulated secondary localization (IDA/IEA); not core site of action.
GO:0008284 positive regulation of cell population proliferation	IEA GO_REF:0000117	KEEP AS NON CORE	Summary: TERT supports proliferative capacity of progenitor/cancer cells; a broad downstream effect of enabling continued division, not the molecular core. Reason: Broad pleiotropic proliferation BP (IEA).
GO:0016605 PML body	IEA GO_REF:0000120	KEEP AS NON CORE	Summary: PML interaction recruits TERT to PML bodies and inhibits telomerase activity; a regulatory sequestration site rather than the active catalytic location. Reason: Regulatory/inhibitory localization (IEA/ISO); non-core.
GO:0016740 transferase activity	IEA GO_REF:0000043	MARK AS OVER ANNOTATED	Summary: Top-level EC 2 transferase parent; far too general to inform TERT function given the specific polymerase activities already annotated. Reason: Root-level MF; uninformative.
GO:0016779 nucleotidyltransferase activity	IEA GO_REF:0000043	MARK AS OVER ANNOTATED	Summary: High-level transferase parent; TERT's nucleotidyltransferase chemistry is already captured precisely by telomerase / RNA-directed DNA polymerase activity. Reason: Over-general MF parent of the specific catalytic terms.
GO:0034061 DNA polymerase activity	IEA GO_REF:0000116	MARK AS OVER ANNOTATED	Summary: Generic DNA polymerase term; TERT is specifically a template-directed RNA-dependent DNA polymerase, already captured by the more precise RNA-directed DNA polymerase / telomerase terms. Reason: Over-general MF; the RNA-directed (RT) child is the correct specific term.
GO:0046872 metal ion binding	IEA GO_REF:0000043	MARK AS OVER ANNOTATED	Summary: Keyword-derived term; TERT binds catalytic Mg2+ at the RT active site, but the bare metal-ion term is uninformative compared with the polymerase MF that already implies it. Reason: Generic UniProtKB-KW-derived MF; subsumed by catalytic activity.
GO:1990904 ribonucleoprotein complex	IEA GO_REF:0000043	KEEP AS NON CORE	Summary: Generic RNP parent; true because telomerase is an RNP, but uninformative relative to the specific telomerase holoenzyme/catalytic-core complex terms. Reason: Over-general CC parent of the telomerase complex (IEA).
GO:0005515 protein binding	IPI PMID:19571879 Telomerase modulates Wnt signalling by association with targ...	MARK AS OVER ANNOTATED	Summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms. Reason: Uninformative generic MF; specific partner terms preferred.
GO:0000049 tRNA binding	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: An electronically inferred tRNA-binding activity; plausible given TERT's RNA-binding fold but not part of the canonical Terc-templated mechanism. Reason: Electronic non-core RNA-binding (IEA/ISO).
GO:0000333 telomerase catalytic core complex	IEA GO_REF:0000107	ACCEPT	Summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase. Reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA). Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0001172 RNA-templated transcription	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Process term associated with the non-canonical TERT-RMRP RdRP activity; not the canonical telomere-extension role. Reason: Non-canonical process linked to RMRP RdRP; electronic.
GO:0001223 transcription coactivator binding	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role. Reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
GO:0003723 RNA binding	IEA GO_REF:0000107	MARK AS OVER ANNOTATED	Summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation. Reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
GO:0003968 RNA-directed RNA polymerase activity	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: A non-canonical RdRP activity has been proposed for TERT (with RMRP RNA, the TERT-RMRP complex), but this is contested and supported only by electronic transfer; not part of the canonical telomerase MF. Reason: Contested non-canonical activity; electronic (IEA/ISO) only.
GO:0005697 telomerase holoenzyme complex	IEA GO_REF:0000107	ACCEPT	Summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1. Reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005739 mitochondrion	IEA GO_REF:0000120	KEEP AS NON CORE	Summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance. Reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
GO:0005829 cytosol	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Cytosolic pool consistent with stress-regulated nuclear export of TERT; secondary to nuclear/telomeric localization. Reason: Secondary localization (IEA/ISO).
GO:0006278 RNA-templated DNA biosynthetic process	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Reverse-transcription process term; correct for TERT but a general restatement of its telomere-templated DNA synthesis already covered by core terms. Reason: Accurate but redundant BP with core telomerase process.
GO:0006606 protein import into nucleus	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Reflects regulated nuclear import of TERT (AKT-driven; RAN/XPO1-dependent shuttling); a trafficking/regulatory process supporting, not equal to, the core function. Reason: Regulatory trafficking BP (IEA/ISO).
GO:0007004 telomere maintenance via telomerase	IEA GO_REF:0000107	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0007005 mitochondrion organization	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Linked to the contested non-canonical mitochondrial role of TERT (ROS/mtDNA biogenesis); a pleiotropic/moonlighting process, not core telomere biology. Reason: Non-canonical mitochondrial process (IEA/ISO).
GO:0007507 heart development	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Developmental contribution of telomerase/TERT in cardiac tissue; a pleiotropic developmental role electronically inferred, not the molecular core. Reason: Pleiotropic developmental BP (IEA).
GO:0016607 nuclear speck	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Reported nuclear-speck localization of TERT is a secondary subnuclear pool, electronically inferred; not the canonical site of telomere extension. Reason: Secondary subnuclear localization (IEA/ISO).
GO:0022616 DNA strand elongation	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Describes the elongation step of telomeric DNA synthesis; accurate but a generic facet of the core telomere-extension process. Reason: Generic BP facet of telomere extension (IEA/ISO).
GO:0030177 positive regulation of Wnt signaling pathway	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension. Reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
GO:0030422 siRNA processing	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Reflects the proposed TERT-RMRP pathway generating RMRP-derived siRNAs; a contested non-canonical role rather than the core telomerase function. Reason: Non-canonical RMRP-linked role (ISS/ComplexPortal).
GO:0031379 RNA-directed RNA polymerase complex	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Companion CC for the proposed TERT-RMRP RdRP activity; non-canonical and electronic, retained as a possible moonlighting context rather than the core telomerase complex. Reason: Non-canonical complex tied to contested RdRP role (IEA/ISO).
GO:0031647 regulation of protein stability	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT participates in protein-stability regulation (e.g., it is itself controlled by DYRK2/EDVP ubiquitination, and modulates partner stability such as CMIP); a regulatory facet, not core. Reason: Pleiotropic regulatory BP (IEA/ISO).
GO:0042645 mitochondrial nucleoid	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Association of TERT with mitochondrial nucleoids relates to proposed mtDNA-protective non-canonical roles; electronic and context-dependent, not the canonical function. Reason: Non-canonical mitochondrial localization (IEA/ISO).
GO:0042802 identical protein binding	IEA GO_REF:0000107	MARK AS OVER ANNOTATED	Summary: Generic self-binding term; TERT can oligomerize but this adds little functional content over the more specific homodimerization terms and is electronic only. Reason: Uninformative generic MF (IEA/ISO).
GO:0042803 protein homodimerization activity	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT can oligomerize via dedicated oligomerization regions; homodimerization is a structural property relevant to assembly but not the catalytic core function. Reason: Specific but ancillary structural MF (IEA/ISO).
GO:0043066 negative regulation of apoptotic process	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT has antiapoptotic/pro-survival activity (UniProt: roles in antiapoptosis), a pleiotropic protective effect downstream of or parallel to telomere maintenance. Reason: Pleiotropic pro-survival BP (IEA/ISO).
GO:0043524 negative regulation of neuron apoptotic process	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Neuron-specific instance of TERT's antiapoptotic activity, relevant to neuroprotection literature; a downstream tissue-specific effect. Reason: Tissue-specific antiapoptotic BP (IEA/ISO).
GO:0045766 positive regulation of angiogenesis	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT supports angiogenesis (linked to endothelial survival/VEGF); a downstream vascular role rather than the core telomerase function. Reason: Pleiotropic vascular BP (IEA/ISO).
GO:0046686 response to cadmium ion	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Electronically inferred stress response to cadmium; a non-specific response-to-stimulus annotation peripheral to TERT's core role. Reason: Generic stress-response BP (IEA).
GO:0051087 protein-folding chaperone binding	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT binds the HSP90/p23 (PTGES3) chaperone machinery required for correct assembly and stabilization of active telomerase; an assembly-support interaction. Reason: Specific biogenesis-related binding (IEA/ISO); non-core MF.
GO:0070034 telomerase RNA binding	IEA GO_REF:0000107	ACCEPT	Summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity. Reason: Specific, informative MF central to holoenzyme assembly and catalysis; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0070200 establishment of protein localization to telomere	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Recruitment of telomerase/TERT to telomeres (via shelterin-linked TPP1/TIN2/POT1b factors); a localization step upstream of catalysis, retained as supporting non-core. Reason: Recruitment/localization BP (IEA/ISO); supports core but distinct.
GO:0071456 cellular response to hypoxia	IEA GO_REF:0000120	KEEP AS NON CORE	Summary: TERT participates in hypoxic stress responses (mitochondrial/ROS and survival programs); a stress-response role secondary to its catalytic function. Reason: Stress-response BP (IEA/ISO).
GO:0071897 DNA biosynthetic process	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT synthesizes telomeric DNA, so this parent process is true but generic relative to telomere maintenance via telomerase. Reason: Correct but over-general BP; electronic propagation.
GO:0090399 replicative senescence	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT activity counteracts replicative senescence by sustaining telomere length; a phenotype-level process downstream of the catalytic role. Reason: Downstream/phenotypic BP (IEA/ISO).
GO:0098680 template-free RNA nucleotidyltransferase activity	IEA GO_REF:0000107	REMOVE	Summary: Template-free RNA nucleotidyltransferase activity is not a function of TERT, whose defining chemistry is template-directed DNA synthesis from the Terc RNA; this electronic annotation contradicts the established mechanism. Reason: Electronic (IEA/ISO) and biologically contradicted; TERT is template-dependent.
GO:0140745 siRNA transcription	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Transcription of siRNA from the RMRP template via the proposed TERT RdRP activity; non-canonical and electronically inferred. Reason: Non-canonical RMRP-linked role (IEA/ISO).
GO:1900087 positive regulation of G1/S transition of mitotic cell cycle	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Cell-cycle-promoting effect linked to TERT's pro-proliferative/non-canonical signaling; pleiotropic and electronically inferred. Reason: Pleiotropic cell-cycle BP (IEA/ISO).
GO:1902895 positive regulation of miRNA transcription	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Reflects TERT's non-canonical influence on miRNA-gene transcription via chromatin association; part of its moonlighting transcriptional activity. Reason: Non-canonical transcriptional BP (IEA/ISO).
GO:1903620 positive regulation of transdifferentiation	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Non-canonical role of TERT in promoting cellular transdifferentiation; context-dependent and electronically inferred. Reason: Non-canonical developmental BP (IEA/ISO).
GO:1904707 positive regulation of vascular associated smooth muscle cell proliferation	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT promotes proliferation of vascular smooth muscle cells; a tissue-specific downstream proliferative effect. Reason: Tissue-specific proliferation BP (IEA/ISO).
GO:1904751 positive regulation of protein localization to nucleolus	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Linked to TERT's nucleolar trafficking interactions; a regulatory localization process, electronically inferred and ancillary. Reason: Regulatory localization BP (IEA/ISO).
GO:1904754 positive regulation of vascular associated smooth muscle cell migration	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT promotes vascular smooth muscle cell migration; part of its pleiotropic vascular-remodeling effects, electronically inferred. Reason: Tissue-specific migration BP (IEA/ISO).
GO:1990572 TERT-RMRP complex	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: TERT can associate with the RMRP RNA in a distinct complex linked to the proposed RdRP/siRNA activity; a non-canonical context separate from telomere maintenance. Reason: Non-canonical TERT-RMRP complex (ISS/ComplexPortal, IEA).
GO:2000352 negative regulation of endothelial cell apoptotic process	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Endothelial antiapoptotic effect of TERT linked to vascular/angiogenesis biology; a pleiotropic downstream role. Reason: Tissue-specific antiapoptotic BP (IEA/ISO).
GO:2000773 negative regulation of cellular senescence	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: By maintaining telomeres, TERT delays senescence; this is a downstream physiological consequence rather than the molecular core function. Reason: Downstream consequence of telomere maintenance (IEA/ISO).
GO:2001240 negative regulation of extrinsic apoptotic signaling pathway in absence of ligand	IEA GO_REF:0000107	KEEP AS NON CORE	Summary: Specific antiapoptotic pathway facet of TERT's pro-survival activity; pleiotropic and electronically inferred. Reason: Pleiotropic antiapoptotic BP (IEA/ISO).
GO:0000049 tRNA binding	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: An electronically inferred tRNA-binding activity; plausible given TERT's RNA-binding fold but not part of the canonical Terc-templated mechanism. Reason: Electronic non-core RNA-binding (IEA/ISO).
GO:0000333 telomerase catalytic core complex	ISO GO_REF:0000119	ACCEPT	Summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase. Reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA). Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0000781 chromosome, telomeric region	ISO GO_REF:0000119	ACCEPT	Summary: Site of catalysis: TERT engages the telomeric region of chromosomes to add TTAGGG repeats. UniProt lists Chromosome, telomere as a subcellular location. Reason: Core CC; the telomere is where the catalytic reaction occurs. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0001172 RNA-templated transcription	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Process term associated with the non-canonical TERT-RMRP RdRP activity; not the canonical telomere-extension role. Reason: Non-canonical process linked to RMRP RdRP; electronic.
GO:0001223 transcription coactivator binding	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role. Reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
GO:0003677 DNA binding	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT binds telomeric ssDNA primer; the generic DNA-binding term is correct but less informative than telomeric DNA binding and is keyword/electronic-derived. Reason: Correct but generic; specific telomeric DNA binding is the core term.
GO:0003720 telomerase activity	ISO GO_REF:0000096	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003720 telomerase activity	ISO GO_REF:0000119	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003723 RNA binding	ISO GO_REF:0000119	MARK AS OVER ANNOTATED	Summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation. Reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
GO:0003964 RNA-directed DNA polymerase activity	ISO GO_REF:0000119	ACCEPT	Summary: Reverse transcriptase activity (EC 2.7.7.49) by which TERT copies the Terc RNA template into telomeric DNA. The conserved RT domain (residues 595-928) with catalytic Mg2+-binding Asp residues underlies telomerase action. Reason: Precise MF describing the reverse-transcriptase catalytic mechanism; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003968 RNA-directed RNA polymerase activity	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: A non-canonical RdRP activity has been proposed for TERT (with RMRP RNA, the TERT-RMRP complex), but this is contested and supported only by electronic transfer; not part of the canonical telomerase MF. Reason: Contested non-canonical activity; electronic (IEA/ISO) only.
GO:0005634 nucleus	ISO GO_REF:0000119	ACCEPT	Summary: Principal compartment where TERT acts; nuclear import/retention is regulated by AKT phosphorylation and SHP2/PTPN11 dephosphorylation, positioning telomerase for chromosome-end extension. Reason: Core CC; nucleus is the canonical site of telomerase action. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005654 nucleoplasm	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT shows diffuse nucleoplasmic distribution; a subnuclear pool that is part of nuclear residence but not the specific telomere/nucleolar site of function. Reason: Nuclear subcompartment; non-core relative to telomere/nucleolus.
GO:0005697 telomerase holoenzyme complex	ISO GO_REF:0000119	ACCEPT	Summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1. Reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005730 nucleolus	ISO GO_REF:0000119	ACCEPT	Summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT. Reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005739 mitochondrion	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance. Reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
GO:0005829 cytosol	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Cytosolic pool consistent with stress-regulated nuclear export of TERT; secondary to nuclear/telomeric localization. Reason: Secondary localization (IEA/ISO).
GO:0006278 RNA-templated DNA biosynthetic process	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Reverse-transcription process term; correct for TERT but a general restatement of its telomere-templated DNA synthesis already covered by core terms. Reason: Accurate but redundant BP with core telomerase process.
GO:0006606 protein import into nucleus	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Reflects regulated nuclear import of TERT (AKT-driven; RAN/XPO1-dependent shuttling); a trafficking/regulatory process supporting, not equal to, the core function. Reason: Regulatory trafficking BP (IEA/ISO).
GO:0007004 telomere maintenance via telomerase	ISO GO_REF:0000119	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0007005 mitochondrion organization	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Linked to the contested non-canonical mitochondrial role of TERT (ROS/mtDNA biogenesis); a pleiotropic/moonlighting process, not core telomere biology. Reason: Non-canonical mitochondrial process (IEA/ISO).
GO:0016605 PML body	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: PML interaction recruits TERT to PML bodies and inhibits telomerase activity; a regulatory sequestration site rather than the active catalytic location. Reason: Regulatory/inhibitory localization (IEA/ISO); non-core.
GO:0016607 nuclear speck	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Reported nuclear-speck localization of TERT is a secondary subnuclear pool, electronically inferred; not the canonical site of telomere extension. Reason: Secondary subnuclear localization (IEA/ISO).
GO:0022616 DNA strand elongation	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Describes the elongation step of telomeric DNA synthesis; accurate but a generic facet of the core telomere-extension process. Reason: Generic BP facet of telomere extension (IEA/ISO).
GO:0030177 positive regulation of Wnt signaling pathway	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension. Reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
GO:0030422 siRNA processing	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Reflects the proposed TERT-RMRP pathway generating RMRP-derived siRNAs; a contested non-canonical role rather than the core telomerase function. Reason: Non-canonical RMRP-linked role (ISS/ComplexPortal).
GO:0031379 RNA-directed RNA polymerase complex	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Companion CC for the proposed TERT-RMRP RdRP activity; non-canonical and electronic, retained as a possible moonlighting context rather than the core telomerase complex. Reason: Non-canonical complex tied to contested RdRP role (IEA/ISO).
GO:0031647 regulation of protein stability	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT participates in protein-stability regulation (e.g., it is itself controlled by DYRK2/EDVP ubiquitination, and modulates partner stability such as CMIP); a regulatory facet, not core. Reason: Pleiotropic regulatory BP (IEA/ISO).
GO:0042645 mitochondrial nucleoid	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Association of TERT with mitochondrial nucleoids relates to proposed mtDNA-protective non-canonical roles; electronic and context-dependent, not the canonical function. Reason: Non-canonical mitochondrial localization (IEA/ISO).
GO:0042802 identical protein binding	ISO GO_REF:0000119	MARK AS OVER ANNOTATED	Summary: Generic self-binding term; TERT can oligomerize but this adds little functional content over the more specific homodimerization terms and is electronic only. Reason: Uninformative generic MF (IEA/ISO).
GO:0042803 protein homodimerization activity	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT can oligomerize via dedicated oligomerization regions; homodimerization is a structural property relevant to assembly but not the catalytic core function. Reason: Specific but ancillary structural MF (IEA/ISO).
GO:0043066 negative regulation of apoptotic process	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: TERT has antiapoptotic/pro-survival activity (UniProt: roles in antiapoptosis), a pleiotropic protective effect downstream of or parallel to telomere maintenance. Reason: Pleiotropic pro-survival BP (IEA/ISO).
GO:0043524 negative regulation of neuron apoptotic process	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: Neuron-specific instance of TERT's antiapoptotic activity, relevant to neuroprotection literature; a downstream tissue-specific effect. Reason: Tissue-specific antiapoptotic BP (IEA/ISO).
GO:0045766 positive regulation of angiogenesis	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: TERT supports angiogenesis (linked to endothelial survival/VEGF); a downstream vascular role rather than the core telomerase function. Reason: Pleiotropic vascular BP (IEA/ISO).
GO:0051087 protein-folding chaperone binding	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT binds the HSP90/p23 (PTGES3) chaperone machinery required for correct assembly and stabilization of active telomerase; an assembly-support interaction. Reason: Specific biogenesis-related binding (IEA/ISO); non-core MF.
GO:0060253 negative regulation of glial cell proliferation	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: Tissue-specific proliferation-regulatory effect attributed to TERT; pleiotropic and supported only by orthology transfer. Reason: Pleiotropic tissue-specific BP (ISO).
GO:0070034 telomerase RNA binding	ISO GO_REF:0000119	ACCEPT	Summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity. Reason: Specific, informative MF central to holoenzyme assembly and catalysis; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0070200 establishment of protein localization to telomere	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Recruitment of telomerase/TERT to telomeres (via shelterin-linked TPP1/TIN2/POT1b factors); a localization step upstream of catalysis, retained as supporting non-core. Reason: Recruitment/localization BP (IEA/ISO); supports core but distinct.
GO:0071456 cellular response to hypoxia	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT participates in hypoxic stress responses (mitochondrial/ROS and survival programs); a stress-response role secondary to its catalytic function. Reason: Stress-response BP (IEA/ISO).
GO:0071897 DNA biosynthetic process	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT synthesizes telomeric DNA, so this parent process is true but generic relative to telomere maintenance via telomerase. Reason: Correct but over-general BP; electronic propagation.
GO:0090399 replicative senescence	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT activity counteracts replicative senescence by sustaining telomere length; a phenotype-level process downstream of the catalytic role. Reason: Downstream/phenotypic BP (IEA/ISO).
GO:0098680 template-free RNA nucleotidyltransferase activity	ISO GO_REF:0000119	REMOVE	Summary: Template-free RNA nucleotidyltransferase activity is not a function of TERT, whose defining chemistry is template-directed DNA synthesis from the Terc RNA; this electronic annotation contradicts the established mechanism. Reason: Electronic (IEA/ISO) and biologically contradicted; TERT is template-dependent.
GO:0140745 siRNA transcription	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Transcription of siRNA from the RMRP template via the proposed TERT RdRP activity; non-canonical and electronically inferred. Reason: Non-canonical RMRP-linked role (IEA/ISO).
GO:1900087 positive regulation of G1/S transition of mitotic cell cycle	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: Cell-cycle-promoting effect linked to TERT's pro-proliferative/non-canonical signaling; pleiotropic and electronically inferred. Reason: Pleiotropic cell-cycle BP (IEA/ISO).
GO:1902895 positive regulation of miRNA transcription	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Reflects TERT's non-canonical influence on miRNA-gene transcription via chromatin association; part of its moonlighting transcriptional activity. Reason: Non-canonical transcriptional BP (IEA/ISO).
GO:1903620 positive regulation of transdifferentiation	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: Non-canonical role of TERT in promoting cellular transdifferentiation; context-dependent and electronically inferred. Reason: Non-canonical developmental BP (IEA/ISO).
GO:1904707 positive regulation of vascular associated smooth muscle cell proliferation	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: TERT promotes proliferation of vascular smooth muscle cells; a tissue-specific downstream proliferative effect. Reason: Tissue-specific proliferation BP (IEA/ISO).
GO:1904751 positive regulation of protein localization to nucleolus	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Linked to TERT's nucleolar trafficking interactions; a regulatory localization process, electronically inferred and ancillary. Reason: Regulatory localization BP (IEA/ISO).
GO:1904754 positive regulation of vascular associated smooth muscle cell migration	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: TERT promotes vascular smooth muscle cell migration; part of its pleiotropic vascular-remodeling effects, electronically inferred. Reason: Tissue-specific migration BP (IEA/ISO).
GO:1990572 TERT-RMRP complex	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: TERT can associate with the RMRP RNA in a distinct complex linked to the proposed RdRP/siRNA activity; a non-canonical context separate from telomere maintenance. Reason: Non-canonical TERT-RMRP complex (ISS/ComplexPortal, IEA).
GO:2000352 negative regulation of endothelial cell apoptotic process	ISO GO_REF:0000096	KEEP AS NON CORE	Summary: Endothelial antiapoptotic effect of TERT linked to vascular/angiogenesis biology; a pleiotropic downstream role. Reason: Tissue-specific antiapoptotic BP (IEA/ISO).
GO:2000773 negative regulation of cellular senescence	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: By maintaining telomeres, TERT delays senescence; this is a downstream physiological consequence rather than the molecular core function. Reason: Downstream consequence of telomere maintenance (IEA/ISO).
GO:2001240 negative regulation of extrinsic apoptotic signaling pathway in absence of ligand	ISO GO_REF:0000119	KEEP AS NON CORE	Summary: Specific antiapoptotic pathway facet of TERT's pro-survival activity; pleiotropic and electronically inferred. Reason: Pleiotropic antiapoptotic BP (IEA/ISO).
GO:0000722 telomere maintenance via recombination	NAS PMID:20351177 Specificity and stoichiometry of subunit interactions in the...	UNDECIDED	Summary: ALT (recombination-based) telomere maintenance is telomerase-INDEPENDENT and is not TERT's mechanism; TERT acts via telomerase. The NAS annotation appears misattributed, but as non-electronic evidence it is flagged not removed. Reason: ALT is telomerase-independent; NAS evidence (not IEA/ISO), so flag not REMOVE.
GO:0007004 telomere maintenance via telomerase	NAS PMID:20351177 Specificity and stoichiometry of subunit interactions in the...	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005697 telomerase holoenzyme complex	ISS GO_REF:0000024	ACCEPT	Summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1. Reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0007004 telomere maintenance via telomerase	ISS GO_REF:0000024	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0003723 RNA binding	IPI PMID:16507993 Regulation of cellular immortalization and steady-state leve...	MARK AS OVER ANNOTATED	Summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation. Reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
GO:0003720 telomerase activity	TAS PMID:16107853 Conditional telomerase induction causes proliferation of hai...	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0007004 telomere maintenance via telomerase	TAS PMID:16107853 Conditional telomerase induction causes proliferation of hai...	ACCEPT	Summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends. Reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0005515 protein binding	IPI PMID:24970747 Extra-nuclear telomerase reverse transcriptase (TERT) regula...	MARK AS OVER ANNOTATED	Summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms. Reason: Uninformative generic MF; specific partner terms preferred.
GO:0005737 cytoplasm	IDA PMID:24970747 Extra-nuclear telomerase reverse transcriptase (TERT) regula...	KEEP AS NON CORE	Summary: TERT shuttles to the cytoplasm under oxidative stress (CRM1/RAN-dependent, Tyr-697 phosphorylation), a regulated secondary localization rather than its catalytic site. Reason: Regulated secondary localization (IDA/IEA); not core site of action.
GO:0005886 plasma membrane	IDA PMID:24970747 Extra-nuclear telomerase reverse transcriptase (TERT) regula...	KEEP AS NON CORE	Summary: An IDA plasma-membrane localization is reported but is a minor/atypical pool far from TERT's nuclear telomere-extension role; retained without endorsing it as core. Reason: Atypical secondary localization (IDA); experimental, so downgraded not removed.
GO:0046326 positive regulation of D-glucose import across plasma membrane	IMP PMID:24970747 Extra-nuclear telomerase reverse transcriptase (TERT) regula...	KEEP AS NON CORE	Summary: An IMP-supported metabolic effect of TERT on glucose uptake; a non-canonical metabolic role distinct from telomere maintenance. Reason: Non-canonical metabolic BP (IMP); experimental, downgrade not remove.
GO:0070034 telomerase RNA binding	IPI PMID:16507993 Regulation of cellular immortalization and steady-state leve...	ACCEPT	Summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity. Reason: Specific, informative MF central to holoenzyme assembly and catalysis; core. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0030177 positive regulation of Wnt signaling pathway	IGI PMID:19571879 Telomerase modulates Wnt signalling by association with targ...	KEEP AS NON CORE	Summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension. Reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
GO:2000648 positive regulation of stem cell proliferation	IMP PMID:16107853 Conditional telomerase induction causes proliferation of hai...	KEEP AS NON CORE	Summary: TERT promotes proliferation of stem/progenitor cells (IMP), consistent with its expression in progenitor compartments; an important but downstream physiological role. Reason: Stem-cell physiology BP (IMP); experimental, downgrade to non-core.
GO:0005515 protein binding	IPI PMID:17130244 Murine Pif1 interacts with telomerase and is dispensable for...	MARK AS OVER ANNOTATED	Summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms. Reason: Uninformative generic MF; specific partner terms preferred.
GO:0005730 nucleolus	ISS GO_REF:0000024	ACCEPT	Summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT. Reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt. Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0000333 telomerase catalytic core complex	IMP PMID:16037417 Effects of telomerase and telomere length on epidermal stem ...	ACCEPT	Summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase. Reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA). Supporting Evidence: UniProt:O70372 Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme. file:mouse/Tert/Tert-deep-research-falcon.md Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP.
GO:0042635 positive regulation of hair cycle	IMP PMID:16107853 Conditional telomerase induction causes proliferation of hai...	KEEP AS NON CORE	Summary: TERT promotes hair-follicle stem cell activation and anagen entry (IMP, a catalysis-independent function shown in mouse skin); a notable tissue-specific moonlighting role. Reason: Tissue-specific stem-cell BP (IMP); experimental, keep as non-core.
GO:0005739 mitochondrion	IDA PMID:21937513 Human telomerase acts as a hTR-independent reverse transcrip...	KEEP AS NON CORE	Summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance. Reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
GO:0042635 positive regulation of hair cycle	IMP PMID:16037417 Effects of telomerase and telomere length on epidermal stem ...	KEEP AS NON CORE	Summary: TERT promotes hair-follicle stem cell activation and anagen entry (IMP, a catalysis-independent function shown in mouse skin); a notable tissue-specific moonlighting role. Reason: Tissue-specific stem-cell BP (IMP); experimental, keep as non-core.
GO:2000648 positive regulation of stem cell proliferation	IMP PMID:16037417 Effects of telomerase and telomere length on epidermal stem ...	KEEP AS NON CORE	Summary: TERT promotes proliferation of stem/progenitor cells (IMP), consistent with its expression in progenitor compartments; an important but downstream physiological role. Reason: Stem-cell physiology BP (IMP); experimental, downgrade to non-core.
GO:0001223 transcription coactivator binding	IPI PMID:19571879 Telomerase modulates Wnt signalling by association with targ...	KEEP AS NON CORE	Summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role. Reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
GO:0003720 telomerase activity	IDA PMID:14701760 Genomic instability and enhanced radiosensitivity in Hsp70.1...	ACCEPT	Summary: Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function. Reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.

Core Functions

Catalyzes telomerase RNA-templated addition of TTAGGG telomeric repeats to chromosome ends as the catalytic protein subunit of telomerase.

Molecular Function:

RNA-directed DNA polymerase activity

Directly Involved In:

telomere maintenance via telomerase

Cellular Locations:

nucleus nucleolus chromosome, telomeric region

In Complex:

telomerase catalytic core complex

Supporting Evidence:

UniProt:O70372
Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
file:mouse/Tert/Tert-deep-research-falcon.md
Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.

References

GO_REF:0000002

Gene Ontology annotation through association of InterPro records with GO terms

GO_REF:0000024

Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity

GO_REF:0000033

Annotation inferences using phylogenetic trees

GO_REF:0000043

Gene Ontology annotation based on UniProtKB/Swiss-Prot keyword mapping

GO_REF:0000044

Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location vocabulary mapping, accompanied by conservative changes to GO terms applied by UniProt

GO_REF:0000096

Automated transfer of experimentally-verified manual GO annotation data to mouse-rat orthologs

GO_REF:0000107

Automatic transfer of experimentally verified manual GO annotation data to orthologs using Ensembl Compara

GO_REF:0000116

Automatic Gene Ontology annotation based on Rhea mapping

GO_REF:0000117

Electronic Gene Ontology annotations created by ARBA machine learning models

GO_REF:0000119

Automated transfer of experimentally-verified manual GO annotation data to mouse-human orthologs

GO_REF:0000120

Combined Automated Annotation using Multiple IEA Methods

PMID:14701760

Genomic instability and enhanced radiosensitivity in Hsp70.1- and Hsp70.3-deficient mice.

The cached publication is about Hsp70.1/Hsp70.3-deficient mice and does not support TERT telomerase activity

PMID:16037417

Effects of telomerase and telomere length on epidermal stem cell behavior.

PMID:16107853

Conditional telomerase induction causes proliferation of hair follicle stem cells.

PMID:16507993

Regulation of cellular immortalization and steady-state levels of the telomerase reverse transcriptase through its carboxy-terminal domain.

PMID:17130244

Murine Pif1 interacts with telomerase and is dispensable for telomere function in vivo.

PMID:19571879

Telomerase modulates Wnt signalling by association with target gene chromatin.

PMID:20351177

Specificity and stoichiometry of subunit interactions in the human telomerase holoenzyme assembled in vivo.

PMID:21937513

Human telomerase acts as a hTR-independent reverse transcriptase in mitochondria.

PMID:24970747

Extra-nuclear telomerase reverse transcriptase (TERT) regulates glucose transport in skeletal muscle cells.

UniProt:O70372

UniProtKB record for mouse Tert (O70372)

file:mouse/Tert/Tert-deep-research-falcon.md

Falcon deep research synthesis for mouse Tert

Deep Research

Falcon

(Tert-deep-research-falcon.md)

this with annotations you find in gene/protein databases, but these can be outdated or inaccurate. Falcon Edison Scientific Literature 47 citations 2026-05-03T20:46:26.168688

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.

We are also interested in the signaling or biochemical pathways in which the gene functions. We are less interested in broad pleiotropic effects, except where these elucidate the precise role.

Include evidence where possible. We are interested in both experimental evidence as well as inference from structure, evolution, or bioinformatic analysis. Precise studies should be prioritized over high-throughput, where available.

Research report: Mouse Tert (telomerase reverse transcriptase; UniProt O70372) functional annotation

1) Key concepts and definitions (current understanding)

Gene/protein identity verification (critical): The mouse gene symbol Tert corresponds to telomerase reverse transcriptase (TERT), the catalytic protein subunit of telomerase (EC 2.7.7.49) in Mus musculus, consistent with the UniProt description provided (O70372). Mouse-specific telomerase biology is repeatedly distinguished from human telomerase biology (expression breadth, localization, POT1 paralogs), supporting that the retrieved literature is about the correct target. (jonesweinert2025telomerefunctionand pages 7-9)

Telomerase and the canonical role of TERT: Telomerase is a ribonucleoprotein (RNP) enzyme that extends telomeric DNA repeats at chromosome ends to counterbalance telomere loss during DNA replication. In mouse genetics, loss of either core component (TERT or TR/TERC) leads to progressive telomere shortening and dysfunction, demonstrating the canonical function of Tert in telomere maintenance in vivo. (chiang2004expressionoftelomerase pages 1-1, chiang2004expressionoftelomerase pages 1-2)

Reaction, substrates, and specificity: In vivo mouse studies establish that telomerase-dependent telomere elongation requires both mTERT (the reverse transcriptase) and mTR/TERC (the RNA template), and that telomerase-dependent elongation did not occur in mTR-deficient mice. (chiang2004expressionoftelomerase pages 1-2, chiang2004expressionoftelomerase pages 2-3) In mammals, the repeat synthesized is (TTAGGG)n on the 3′ chromosome-end primer, using TR/TERC as an internal template. (palamarchuk2023multipleactionsof pages 1-2)

Telomerase holoenzyme organization and key partners: High-resolution mammalian structural work shows telomerase is organized into a catalytic core (responsible for DNA extension) and an H/ACA RNP lobe responsible for biogenesis. The H/ACA lobe contains dyskerin (DKC1), NOP10, NHP2, and GAR1, and also includes TCAB1, which interacts with CAB/BIO motifs on telomerase RNA (hTR in humans) and with NHP2. (ghanim20242.7åcryoem pages 1-2, ghanim20242.7åcryoem pages 6-7, ghanim20242.7åcryoem media 4afde17f)

Telomerase recruitment at telomeres (shelterin-linked factors): Review evidence links telomerase recruitment/activity to shelterin-associated factors including TPP1 (ACD) and TIN2 (TINF2), and describes important mouse–human differences in the POT1 system: mice have POT1a (inhibits telomerase recruitment) and POT1b (promotes recruitment through TPP1 and recruits CST). (jonesweinert2025telomerefunctionand pages 7-9)

Subcellular localization: The canonical site of action is the nucleus at telomeres. However, there are species differences in nuclear subcompartments: a recent authoritative review notes that telomerase localization in Cajal bodies does not occur in mice (unlike humans, where it is implicated in biogenesis). (jonesweinert2025telomerefunctionand pages 7-9) Reviews also support that TERT (and TR) can localize to mitochondria under some contexts and influence mitochondrial function, reflecting non-canonical activities. (rubtsova2024telomerereprogrammingand pages 6-7, boccardi2024agingcancerand pages 3-5)

2) Recent developments and latest research (prioritize 2023–2024)

2.1 Structural/biogenesis advances informing functional annotation

A major 2024 advance is the 2.7 Å cryo-EM structure of the human telomerase H/ACA RNP, which refines how telomerase RNA motifs and H/ACA proteins (including TCAB1) assemble and rationalizes disease mutations at interaction interfaces. Although this is a human structure, it is directly relevant for mouse Tert functional annotation because the core biogenesis logic and partner set are conserved across mammals (TERT + TR/TERC + H/ACA proteins + TCAB1-class factors). (ghanim20242.7åcryoem pages 1-2, ghanim20242.7åcryoem pages 6-7, ghanim20242.7åcryoem media 4afde17f)

2.2 2023–2024 synthesis of non-canonical roles (expert reviews)

2023–2024 reviews emphasize that TERT should not be annotated solely as a telomere-extending enzyme: TERT is described as interfacing with signaling and stress-response pathways and appearing in multiple intracellular compartments, consistent with “non-canonical” roles. Examples highlighted include connections to Wnt/β-catenin, NF-κB, Myc, VEGF, and DNA-damage signaling (ATM/ATR markers), and mitochondrial functions (ROS, mtDNA repair/biogenesis). (rubtsova2024telomerereprogrammingand pages 6-7, boccardi2024agingcancerand pages 3-5, palamarchuk2023multipleactionsof pages 1-2)

2.3 Mouse-relevant 2024 primary evidence for a non-canonical immunology mechanism

A 2024 primary study in Cell Communication and Signaling used a dendritic-cell (DC) specific conditional Tert knockout (Tertf/f Itgax-Cre, activated with tamoxifen) in an ovalbumin/alum allergic rhinitis model and concluded that elevated TERT impairs DC tolerogenic function by suppressing IL-10. Mechanistically, TERT was reported to interact with CMIP (c-Maf inducing protein) and promote CMIP ubiquitination and degradation, thereby suppressing IL-10 production; DC-specific Tert ablation mitigated allergic rhinitis readouts. (xu2024anassociationbetween pages 9-12, xu2024anassociationbetween pages 2-5, xu2024anassociationbetween pages 5-9, xu2024anassociationbetween pages 12-13, xu2024anassociationbetween pages 13-14)

3) Current applications and real-world implementations

3.1 Core experimental implementations in mouse telomere biology

Mouse Tert functional studies commonly implement:

TRAP (TRAPeze) telomerase activity assays using CHAPS lysates (e.g., testis or stimulated splenocytes) and gel-resolved amplification products. (chiang2004expressionoftelomerase pages 2-3)
Telomere length measurement via pulsed-field gel electrophoresis with in-gel hybridization (telomeric probes) and Q-FISH using telomeric PNA/oligo probes in metaphase spreads, including explicit sampling strategies (hundreds to thousands of telomeres). (chiang2004expressionoftelomerase pages 2-3, hathcock2002haploinsufficiencyofmtr pages 3-3)
RT-PCR/real-time PCR for mTert quantification using standard curves and reference transcripts. (chiang2004expressionoftelomerase pages 2-3)

These methods are widely used for functional annotation (linking Tert genotype/expression → telomerase enzymatic activity → telomere length distributions → cellular phenotypes). (chiang2004expressionoftelomerase pages 2-3, chiang2004expressionoftelomerase pages 4-5)

3.2 Mouse model implementations

Key mouse implementations include:

mTert knockout and heterozygous lines to study multigenerational telomere shortening, tissue renewal, and genome instability phenotypes. (chiang2004expressionoftelomerase pages 4-5, erdmann2004distinctdosagerequirements pages 1-2)
Cell-type specific conditional Tert knockout (e.g., Itgax-Cre DC-specific deletion) to dissect non-canonical roles in immune regulation. (xu2024anassociationbetween pages 9-12, xu2024anassociationbetween pages 13-14)
Mouse–human translation models that humanize telomerase regulation (recent engineered alleles discussed below) to better emulate human telomere constraints. (zhang2025modificationofthe pages 1-2)

3.3 Translational/clinical-facing implementations (2024 synthesis)

A 2024 Cold Spring Harbor Perspectives in Biology review summarizes major telomerase-targeting strategies for cancer therapeutics: direct inhibitors (e.g., BIBR-1532), TERC-targeting oligonucleotides (e.g., GRN163L/imetelstat, noted in that review as FDA-approved), G-quadruplex stabilizers (TMPyP4, BRACO-19), telomerase vaccines (e.g., GRNVAC1, GV1001, VX-001, INVAC-1, UV1), TERT-promoter driven oncolytic viruses (Telomelysin), and telomere-targeting nucleoside analogs (6-thio-dG). These are mainly human-oncology implementations, but they frequently rely on mouse models (including xenografts) for preclinical validation. (siteni2024telomeraseincancer pages 1-2)

4) Expert opinions and analysis (authoritative synthesis)

Species-context is essential for interpreting mouse Tert annotation. A recent authoritative review emphasizes that mice differ from humans in telomere length, Tert expression breadth, and telomerase biogenesis/localization logic; for example, Cajal-body telomerase localization is not observed in mice. Therefore, functional annotation for mouse Tert should prioritize direct mouse genetic evidence for canonical telomere maintenance while clearly flagging which mechanistic details are inferred from conserved mammalian (often human) structural biology. (jonesweinert2025telomerefunctionand pages 7-9, ghanim20242.7åcryoem pages 1-2)

Canonical vs non-canonical functions: Reviews in 2023–2024 highlight a growing consensus that TERT can act beyond telomeres (mitochondria, transcriptional regulation, stress responses), but that these roles are more context-dependent and mechanistically heterogeneous than the canonical telomere-extension role. This impacts annotation: the primary molecular function remains RNA-dependent DNA polymerase activity in telomere repeat addition, while non-canonical roles should be annotated as conditional/secondary with careful evidence tagging. (rubtsova2024telomerereprogrammingand pages 6-7, boccardi2024agingcancerand pages 3-5, palamarchuk2023multipleactionsof pages 1-2)

5) Relevant statistics and data (recent and foundational quantitative evidence)

Mouse vs human telomere lengths and shortening rates (review-level quantitative context): A recent review reports human telomeres are ~10–14 kb at birth, whereas mouse telomeres are much longer (~20–150 kb). It also reports shortening rates of 43–72 bp/year in humans versus ~7 kbp/year in mice (contextualizing species differences that shape how Tert phenotypes manifest). (jonesweinert2025telomerefunctionand pages 7-9)

Quantitative assay design for telomere measurement: In a foundational mouse study, Q-FISH analyses used ≥800 telomeres for mTR genotypes and ≥1,600 telomeres for mTERT genotypes, with telomerase activity assessed by TRAPeze in stimulated lymphocytes/testis. (chiang2004expressionoftelomerase pages 2-3)

mTert dosage and telomere integrity in late-generation deficiency: In late-generation mTert-null mice, Q-FISH showed increasing “signal-free ends” (SFE) reaching 5.5% (G7) and 10.7% (G8), consistent with progressive telomere erosion/dysfunction when telomerase is absent. (erdmann2004distinctdosagerequirements pages 1-2)

Non-canonical Tert in immune tolerance (2024 primary quantitative design): In the 2024 dendritic-cell study, mouse cohort sizes were reported as n=6 per group, and outcomes included quantified allergic rhinitis symptom scores and mediator/cytokine measurements (e.g., Th2 cytokines in nasal lavage and serum sIgE). (xu2024anassociationbetween pages 9-12)

Consolidated functional-annotation summary table

Aspect	Key points	Best supporting sources with publication year and URL
Molecular function / reaction	Mouse Tert encodes the catalytic reverse transcriptase subunit of telomerase. In vivo mouse genetics show that loss of mTert abolishes detectable telomerase activity and causes progressive telomere maintenance defects, establishing the canonical function as telomeric DNA repeat synthesis at chromosome ends. Conserved mammalian work further defines telomerase as an RNA-dependent DNA polymerase that extends telomeres to counter the end-replication problem. (chiang2004expressionoftelomerase pages 1-1, boccardi2024agingcancerand pages 3-5, palamarchuk2023multipleactionsof pages 1-2)	Chiang et al., 2004, Molecular and Cellular Biology, https://doi.org/10.1128/mcb.24.16.7024-7031.2004; Boccardi & Marano, 2024, Int J Mol Sci, https://doi.org/10.3390/ijms25158542; Palamarchuk et al., 2023, Biomedicines, https://doi.org/10.3390/biomedicines11041091
Substrates / template / primer	Telomerase uses TERC/TR as the internal RNA template and a chromosome-end 3' DNA primer to add TTAGGG repeats. Mouse studies directly show that both mTR/TERC and mTert are required for telomere elongation in vivo; conserved structural studies show the catalytic core contains hTR/mammalian TR template-pseudoknot and CR4/5 regions bound to TERT for DNA extension. (chiang2004expressionoftelomerase pages 1-2, chiang2004expressionoftelomerase pages 1-1, ghanim20242.7åcryoem pages 1-2)	Chiang et al., 2004, Molecular and Cellular Biology, https://doi.org/10.1128/mcb.24.16.7024-7031.2004; Ghanim et al., 2024, Nature Communications, https://doi.org/10.1038/s41467-024-45002-x
Complex partners / biogenesis factors	Core telomerase requires TERT + TERC/TR. Conserved mammalian telomerase biogenesis additionally depends on DKC1/dyskerin, NOP10, NHP2, GAR1, and TCAB1/WRAP53 for H/ACA RNP stability/localization; disease-associated mutations in these factors impair telomerase biogenesis or localization. Recruitment/activity also involve shelterin-linked factors including TPP1 (ACD) and TIN2 (TINF2). (ghanim20242.7åcryoem pages 1-2, jonesweinert2025telomerefunctionand pages 7-9, ghanim20242.7åcryoem pages 6-7)	Ghanim et al., 2024, Nature Communications, https://doi.org/10.1038/s41467-024-45002-x; Jones-Weinert et al., 2025, Nat Rev Mol Cell Biol, https://doi.org/10.1038/s41580-024-00800-5
Localization	The principal functional site is the nucleus at telomeres. Conserved mammalian studies place telomerase in a catalytic core plus H/ACA lobe; human telomerase uses TCAB1 for Cajal-body localization, but review evidence indicates mouse telomerase does not localize to Cajal bodies, marking a species difference. Non-canonical literature also supports mitochondrial localization of TERT/TR under some contexts. (jonesweinert2025telomerefunctionand pages 7-9, ghanim20242.7åcryoem pages 1-2, rubtsova2024telomerereprogrammingand pages 6-7, boccardi2024agingcancerand pages 3-5)	Jones-Weinert et al., 2025, Nat Rev Mol Cell Biol, https://doi.org/10.1038/s41580-024-00800-5; Ghanim et al., 2024, Nature Communications, https://doi.org/10.1038/s41467-024-45002-x; Rubtsova et al., 2024, Int J Mol Sci, https://doi.org/10.3390/ijms251910500
Mouse-vs-human differences	Mice have broader somatic Tert expression and telomerase activity than humans, though activity declines with age. Review data cite human telomeres ~10–14 kb at birth and mouse telomeres ~20–150 kb; a 2025 humanized-regulation mouse model reports typical wild-type C57BL/6J telomeres ~50 kb. Mouse telomerase also differs in localization biology (no Cajal-body localization) and shelterin regulation: mice have POT1a and POT1b, with POT1b promoting recruitment through TPP1 while POT1a inhibits recruitment. (jonesweinert2025telomerefunctionand pages 7-9, zhang2025modificationofthe pages 1-2)	Jones-Weinert et al., 2025, Nat Rev Mol Cell Biol, https://doi.org/10.1038/s41580-024-00800-5; Zhang et al., 2025, Nature Communications, https://doi.org/10.1038/s41467-025-56559-6
Non-canonical functions	Recent reviews attribute extra-telomeric TERT functions in transcriptional regulation and stress responses, including links to Wnt/β-catenin, NF-κB, Myc, VEGF, DNMT1/DNMT3B, ATM/ATR/γH2AX, mitochondrial function/ROS control, and cell-death regulation. Mouse-relevant 2024 evidence also links elevated Tert in dendritic cells to reduced IL-10 tolerance programs and worsened allergic inflammation. These roles are informative but generally less settled than canonical telomere extension. (rubtsova2024telomerereprogrammingand pages 6-7, boccardi2024agingcancerand pages 3-5, palamarchuk2023multipleactionsof pages 1-2, yu2023telomerasereversetranscriptase pages 1-2)	Rubtsova et al., 2024, Int J Mol Sci, https://doi.org/10.3390/ijms251910500; Boccardi & Marano, 2024, Int J Mol Sci, https://doi.org/10.3390/ijms25158542; Palamarchuk et al., 2023, Biomedicines, https://doi.org/10.3390/biomedicines11041091; Yu et al., 2023, Front Immunol, https://doi.org/10.3389/fimmu.2023.1165632
Key quantitative stats	Mouse quantitative benchmarks gathered here include: mTERT heterozygotes show mTERT mRNA reduced to ~1/3–1/2 of wild type but can remain competent for telomere elongation in the tested in vivo setting; human telomeres shorten by 43–72 bp/year versus ~7 kbp/year in mice in the cited review; engineered humanized-regulation mice reached 10–12 kb telomeres versus ~50 kb wild type, and Terth/- G6 ~25 kb. End-replication-loss estimates in review literature are ~200 bp/division. (chiang2004expressionoftelomerase pages 2-3, jonesweinert2025telomerefunctionand pages 7-9, zhang2025modificationofthe pages 1-2, huang2024decipheringtheimpact pages 1-2)	Chiang et al., 2004, Molecular and Cellular Biology, https://doi.org/10.1128/mcb.24.16.7024-7031.2004; Jones-Weinert et al., 2025, Nat Rev Mol Cell Biol, https://doi.org/10.1038/s41580-024-00800-5; Zhang et al., 2025, Nature Communications, https://doi.org/10.1038/s41467-025-56559-6; Huang et al., 2024, Front Immunol, https://doi.org/10.3389/fimmu.2024.1465006
Applications / models / therapeutics	Mouse Tert is central to widely used knockout/heterozygous/intercross telomere-biology models and newer humanized Tert-regulation models for aging/cancer research. Functional assays include TRAP telomerase activity assays, Q-FISH, and telomere Southern/in-gel hybridization in mouse studies. Real-world translational telomerase applications summarized in 2024 include direct inhibitors (imetelstat/GRN163L, noted as FDA-approved in the review), G-quadruplex ligands, vaccines (GRNVAC1, GV1001, VX-001, INVAC-1, UV1), TERT-promoter-driven oncolytic viruses (Telomelysin), and telomere-targeting nucleoside analogs (6-thio-dG). (chiang2004expressionoftelomerase pages 2-3, zhang2025modificationofthe pages 1-2, siteni2024telomeraseincancer pages 1-2)	Chiang et al., 2004, Molecular and Cellular Biology, https://doi.org/10.1128/mcb.24.16.7024-7031.2004; Zhang et al., 2025, Nature Communications, https://doi.org/10.1038/s41467-025-56559-6; Siteni et al., 2024, Cold Spring Harb Perspect Biol, https://doi.org/10.1101/cshperspect.a041703

Table: This table summarizes the functional annotation of mouse Tert (UniProt O70372), covering its canonical telomerase role, molecular partners, localization, species-specific features, non-canonical functions, quantitative benchmarks, and translational applications using only evidence gathered in this run.

Visual evidence (structural biology supporting conserved partners/biogenesis)

The interaction between TCAB1 and telomerase RNA CAB/BIO motifs and NHP2, and schematic architecture of the telomerase H/ACA RNP lobe, are shown in the extracted figures from Ghanim et al. 2024. (ghanim20242.7åcryoem media 4afde17f, ghanim20242.7åcryoem media 202d4832)

Concluding functional annotation statement (mouse-focused)

Mouse Tert (UniProt O70372) encodes the telomerase reverse transcriptase, whose primary function is to extend telomeric (TTAGGG)n repeats at chromosome ends as the catalytic core of the telomerase RNP, requiring the telomerase RNA template (Terc/mTR) and a set of conserved telomerase biogenesis factors (H/ACA proteins, TCAB1-class factors) for holoenzyme maturation and localization. Mouse genetic studies establish Tert as essential for telomerase activity and long-term telomere maintenance, with progressive telomere dysfunction emerging in telomerase-null backgrounds across generations. Recent work also supports context-specific, non-canonical roles for Tert (e.g., dendritic cell tolerogenic programming via CMIP/IL-10 regulation), which should be annotated as secondary and evidence-scoped. (chiang2004expressionoftelomerase pages 1-1, chiang2004expressionoftelomerase pages 2-3, erdmann2004distinctdosagerequirements pages 1-2, xu2024anassociationbetween pages 9-12)

References

(jonesweinert2025telomerefunctionand pages 7-9): Corey Jones-Weinert, Laura Mainz, and Jan Karlseder. Telomere function and regulation from mouse models to human ageing and disease. Nature reviews. Molecular cell biology, Nov 2025. URL: https://doi.org/10.1038/s41580-024-00800-5, doi:10.1038/s41580-024-00800-5. This article has 49 citations.
(chiang2004expressionoftelomerase pages 1-1): Y. Jeffrey Chiang, Michael T. Hemann, Karen S. Hathcock, Lino Tessarollo, Lionel Feigenbaum, William C. Hahn, and Richard J. Hodes. Expression of telomerase rna template, but not telomerase reverse transcriptase, is limiting for telomere length maintenance in vivo. Molecular and Cellular Biology, 24:7024-7031, Aug 2004. URL: https://doi.org/10.1128/mcb.24.16.7024-7031.2004, doi:10.1128/mcb.24.16.7024-7031.2004. This article has 139 citations and is from a domain leading peer-reviewed journal.
(chiang2004expressionoftelomerase pages 1-2): Y. Jeffrey Chiang, Michael T. Hemann, Karen S. Hathcock, Lino Tessarollo, Lionel Feigenbaum, William C. Hahn, and Richard J. Hodes. Expression of telomerase rna template, but not telomerase reverse transcriptase, is limiting for telomere length maintenance in vivo. Molecular and Cellular Biology, 24:7024-7031, Aug 2004. URL: https://doi.org/10.1128/mcb.24.16.7024-7031.2004, doi:10.1128/mcb.24.16.7024-7031.2004. This article has 139 citations and is from a domain leading peer-reviewed journal.
(chiang2004expressionoftelomerase pages 2-3): Y. Jeffrey Chiang, Michael T. Hemann, Karen S. Hathcock, Lino Tessarollo, Lionel Feigenbaum, William C. Hahn, and Richard J. Hodes. Expression of telomerase rna template, but not telomerase reverse transcriptase, is limiting for telomere length maintenance in vivo. Molecular and Cellular Biology, 24:7024-7031, Aug 2004. URL: https://doi.org/10.1128/mcb.24.16.7024-7031.2004, doi:10.1128/mcb.24.16.7024-7031.2004. This article has 139 citations and is from a domain leading peer-reviewed journal.
(palamarchuk2023multipleactionsof pages 1-2): Anastasia I. Palamarchuk, Elena I. Kovalenko, and Maria A. Streltsova. Multiple actions of telomerase reverse transcriptase in cell death regulation. Biomedicines, 11:1091, Apr 2023. URL: https://doi.org/10.3390/biomedicines11041091, doi:10.3390/biomedicines11041091. This article has 34 citations.
(ghanim20242.7åcryoem pages 1-2): George E. Ghanim, Zala Sekne, Sebastian Balch, Anne-Marie M. van Roon, and Thi Hoang Duong Nguyen. 2.7 å cryo-em structure of human telomerase h/aca ribonucleoprotein. Nature Communications, Jan 2024. URL: https://doi.org/10.1038/s41467-024-45002-x, doi:10.1038/s41467-024-45002-x. This article has 28 citations and is from a highest quality peer-reviewed journal.
(ghanim20242.7åcryoem pages 6-7): George E. Ghanim, Zala Sekne, Sebastian Balch, Anne-Marie M. van Roon, and Thi Hoang Duong Nguyen. 2.7 å cryo-em structure of human telomerase h/aca ribonucleoprotein. Nature Communications, Jan 2024. URL: https://doi.org/10.1038/s41467-024-45002-x, doi:10.1038/s41467-024-45002-x. This article has 28 citations and is from a highest quality peer-reviewed journal.
(ghanim20242.7åcryoem media 4afde17f): George E. Ghanim, Zala Sekne, Sebastian Balch, Anne-Marie M. van Roon, and Thi Hoang Duong Nguyen. 2.7 å cryo-em structure of human telomerase h/aca ribonucleoprotein. Nature Communications, Jan 2024. URL: https://doi.org/10.1038/s41467-024-45002-x, doi:10.1038/s41467-024-45002-x. This article has 28 citations and is from a highest quality peer-reviewed journal.
(rubtsova2024telomerereprogrammingand pages 6-7): Maria P. Rubtsova, Denis A. Nikishin, Mikhail Y. Vyssokikh, Maria S. Koriagina, Andrey V. Vasiliev, and Olga A. Dontsova. Telomere reprogramming and cellular metabolism: is there a link? International Journal of Molecular Sciences, 25:10500, Sep 2024. URL: https://doi.org/10.3390/ijms251910500, doi:10.3390/ijms251910500. This article has 9 citations.
(boccardi2024agingcancerand pages 3-5): Virginia Boccardi and Luigi Marano. Aging, cancer, and inflammation: the telomerase connection. International Journal of Molecular Sciences, 25:8542, Aug 2024. URL: https://doi.org/10.3390/ijms25158542, doi:10.3390/ijms25158542. This article has 62 citations.
(xu2024anassociationbetween pages 9-12): Xuejie Xu, Lihua Mo, Yun Liao, Kaitlyn Song Zhang, Hanqing Zhang, Le Liu, Yu Liu, Aifa Tang, Pingchang Yang, and Xiaoyu Liu. An association between elevated telomerase reverse transcriptase expression and the immune tolerance disruption of dendritic cells. Cell Communication and Signaling : CCS, May 2024. URL: https://doi.org/10.1186/s12964-024-01650-6, doi:10.1186/s12964-024-01650-6. This article has 7 citations.
(xu2024anassociationbetween pages 2-5): Xuejie Xu, Lihua Mo, Yun Liao, Kaitlyn Song Zhang, Hanqing Zhang, Le Liu, Yu Liu, Aifa Tang, Pingchang Yang, and Xiaoyu Liu. An association between elevated telomerase reverse transcriptase expression and the immune tolerance disruption of dendritic cells. Cell Communication and Signaling : CCS, May 2024. URL: https://doi.org/10.1186/s12964-024-01650-6, doi:10.1186/s12964-024-01650-6. This article has 7 citations.
(xu2024anassociationbetween pages 5-9): Xuejie Xu, Lihua Mo, Yun Liao, Kaitlyn Song Zhang, Hanqing Zhang, Le Liu, Yu Liu, Aifa Tang, Pingchang Yang, and Xiaoyu Liu. An association between elevated telomerase reverse transcriptase expression and the immune tolerance disruption of dendritic cells. Cell Communication and Signaling : CCS, May 2024. URL: https://doi.org/10.1186/s12964-024-01650-6, doi:10.1186/s12964-024-01650-6. This article has 7 citations.
(xu2024anassociationbetween pages 12-13): Xuejie Xu, Lihua Mo, Yun Liao, Kaitlyn Song Zhang, Hanqing Zhang, Le Liu, Yu Liu, Aifa Tang, Pingchang Yang, and Xiaoyu Liu. An association between elevated telomerase reverse transcriptase expression and the immune tolerance disruption of dendritic cells. Cell Communication and Signaling : CCS, May 2024. URL: https://doi.org/10.1186/s12964-024-01650-6, doi:10.1186/s12964-024-01650-6. This article has 7 citations.
(xu2024anassociationbetween pages 13-14): Xuejie Xu, Lihua Mo, Yun Liao, Kaitlyn Song Zhang, Hanqing Zhang, Le Liu, Yu Liu, Aifa Tang, Pingchang Yang, and Xiaoyu Liu. An association between elevated telomerase reverse transcriptase expression and the immune tolerance disruption of dendritic cells. Cell Communication and Signaling : CCS, May 2024. URL: https://doi.org/10.1186/s12964-024-01650-6, doi:10.1186/s12964-024-01650-6. This article has 7 citations.
(hathcock2002haploinsufficiencyofmtr pages 3-3): Karen S. Hathcock, Michael T. Hemann, Kay Keyer Opperman, Margaret A. Strong, Carol W. Greider, and Richard J. Hodes. Haploinsufficiency of mtr results in defects in telomere elongation. Proceedings of the National Academy of Sciences of the United States of America, 99:3591-3596, Mar 2002. URL: https://doi.org/10.1073/pnas.012549799, doi:10.1073/pnas.012549799. This article has 135 citations and is from a highest quality peer-reviewed journal.
(chiang2004expressionoftelomerase pages 4-5): Y. Jeffrey Chiang, Michael T. Hemann, Karen S. Hathcock, Lino Tessarollo, Lionel Feigenbaum, William C. Hahn, and Richard J. Hodes. Expression of telomerase rna template, but not telomerase reverse transcriptase, is limiting for telomere length maintenance in vivo. Molecular and Cellular Biology, 24:7024-7031, Aug 2004. URL: https://doi.org/10.1128/mcb.24.16.7024-7031.2004, doi:10.1128/mcb.24.16.7024-7031.2004. This article has 139 citations and is from a domain leading peer-reviewed journal.
(erdmann2004distinctdosagerequirements pages 1-2): Natalie Erdmann, Yie Liu, and Lea Harrington. Distinct dosage requirements for the maintenance of long and short telomeres in mtert heterozygous mice. Proceedings of the National Academy of Sciences of the United States of America, 101 16:6080-5, Apr 2004. URL: https://doi.org/10.1073/pnas.0401580101, doi:10.1073/pnas.0401580101. This article has 133 citations and is from a highest quality peer-reviewed journal.
(zhang2025modificationofthe pages 1-2): Fan Zhang, De Cheng, Kenneth I. Porter, Emily A. Heck, Shuwen Wang, Hui Zhang, Christopher J. Davis, Gavin P. Robertson, and Jiyue Zhu. Modification of the telomerase gene with human regulatory sequences resets mouse telomeres to human length. Nature Communications, Feb 2025. URL: https://doi.org/10.1038/s41467-025-56559-6, doi:10.1038/s41467-025-56559-6. This article has 8 citations and is from a highest quality peer-reviewed journal.
(siteni2024telomeraseincancer pages 1-2): Silvia Siteni, Anthony Grichuk, and Jerry W. Shay. Telomerase in cancer therapeutics. Cold Spring Harbor perspectives in biology, 16:a041703, Sep 2024. URL: https://doi.org/10.1101/cshperspect.a041703, doi:10.1101/cshperspect.a041703. This article has 13 citations and is from a peer-reviewed journal.
(yu2023telomerasereversetranscriptase pages 1-2): Xin Yu, Meng-meng Liu, Caifeng Zheng, Yu-Tong Liu, Zhuoran Wang, and Zhan-You Wang. Telomerase reverse transcriptase and neurodegenerative diseases. Frontiers in Immunology, Mar 2023. URL: https://doi.org/10.3389/fimmu.2023.1165632, doi:10.3389/fimmu.2023.1165632. This article has 22 citations and is from a peer-reviewed journal.
(huang2024decipheringtheimpact pages 1-2): Lingyi Huang, Mingfu Zhang, Ding Bai, and Yi Qu. Deciphering the impact of tert/telomerase on immunosenescence and t cell revitalization. Frontiers in Immunology, Sep 2024. URL: https://doi.org/10.3389/fimmu.2024.1465006, doi:10.3389/fimmu.2024.1465006. This article has 11 citations and is from a peer-reviewed journal.
(ghanim20242.7åcryoem media 202d4832): George E. Ghanim, Zala Sekne, Sebastian Balch, Anne-Marie M. van Roon, and Thi Hoang Duong Nguyen. 2.7 å cryo-em structure of human telomerase h/aca ribonucleoprotein. Nature Communications, Jan 2024. URL: https://doi.org/10.1038/s41467-024-45002-x, doi:10.1038/s41467-024-45002-x. This article has 28 citations and is from a highest quality peer-reviewed journal.

Citations

jonesweinert2025telomerefunctionand pages 7-9
palamarchuk2023multipleactionsof pages 1-2
chiang2004expressionoftelomerase pages 2-3
zhang2025modificationofthe pages 1-2
siteni2024telomeraseincancer pages 1-2
erdmann2004distinctdosagerequirements pages 1-2
xu2024anassociationbetween pages 9-12
chiang2004expressionoftelomerase pages 1-1
chiang2004expressionoftelomerase pages 1-2
rubtsova2024telomerereprogrammingand pages 6-7
boccardi2024agingcancerand pages 3-5
xu2024anassociationbetween pages 2-5
xu2024anassociationbetween pages 5-9
xu2024anassociationbetween pages 12-13
xu2024anassociationbetween pages 13-14
hathcock2002haploinsufficiencyofmtr pages 3-3
chiang2004expressionoftelomerase pages 4-5
yu2023telomerasereversetranscriptase pages 1-2
huang2024decipheringtheimpact pages 1-2
https://doi.org/10.1128/mcb.24.16.7024-7031.2004;
https://doi.org/10.3390/ijms25158542;
https://doi.org/10.3390/biomedicines11041091
https://doi.org/10.1038/s41467-024-45002-x
https://doi.org/10.1038/s41467-024-45002-x;
https://doi.org/10.1038/s41580-024-00800-5
https://doi.org/10.1038/s41580-024-00800-5;
https://doi.org/10.3390/ijms251910500
https://doi.org/10.1038/s41467-025-56559-6
https://doi.org/10.3390/ijms251910500;
https://doi.org/10.3390/biomedicines11041091;
https://doi.org/10.3389/fimmu.2023.1165632
https://doi.org/10.1038/s41467-025-56559-6;
https://doi.org/10.3389/fimmu.2024.1465006
https://doi.org/10.1101/cshperspect.a041703
https://doi.org/10.1038/s41580-024-00800-5,
https://doi.org/10.1128/mcb.24.16.7024-7031.2004,
https://doi.org/10.3390/biomedicines11041091,
https://doi.org/10.1038/s41467-024-45002-x,
https://doi.org/10.3390/ijms251910500,
https://doi.org/10.3390/ijms25158542,
https://doi.org/10.1186/s12964-024-01650-6,
https://doi.org/10.1073/pnas.012549799,
https://doi.org/10.1073/pnas.0401580101,
https://doi.org/10.1038/s41467-025-56559-6,
https://doi.org/10.1101/cshperspect.a041703,
https://doi.org/10.3389/fimmu.2023.1165632,
https://doi.org/10.3389/fimmu.2024.1465006,

📄 View Raw YAML

id: O70372
gene_symbol: Tert
product_type: PROTEIN
status: COMPLETE
taxon:
  id: NCBITaxon:10090
  label: Mus musculus
description: Tert encodes telomerase reverse transcriptase, the catalytic protein subunit of the telomerase ribonucleoprotein. TERT uses the telomerase RNA template to synthesize telomeric TTAGGG repeats at chromosome ends, maintaining telomere length in proliferative and stem/progenitor contexts. Reported mitochondrial, transcriptional, Wnt, immune, or anti-apoptotic roles are treated as context-dependent non-canonical activities rather than the primary function.
existing_annotations:
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0070034
    label: telomerase RNA binding
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity.
    action: ACCEPT
    reason: Specific, informative MF central to holoenzyme assembly and catalysis; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0000333
    label: telomerase catalytic core complex
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase.
    action: ACCEPT
    reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA).
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0042162
    label: telomeric DNA binding
  evidence_type: IBA
  original_reference_id: GO_REF:0000033
  review:
    summary: TERT binds the single-stranded telomeric DNA primer/3' chromosome terminus, with anchor sites holding primer nucleotides upstream of the RNA-DNA hybrid to support processive repeat addition.
    action: ACCEPT
    reason: Specific DNA-binding MF for the telomeric primer substrate; core to catalysis.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0000723
    label: telomere maintenance
  evidence_type: IEA
  original_reference_id: GO_REF:0000002
  review:
    summary: Parent process capturing TERT's role in preserving telomere length and chromosome-end integrity. Retained as a faithful, if more general, statement of the core biological role.
    action: ACCEPT
    reason: Correct core BP; broader parent of telomere maintenance via telomerase.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0000781
    label: chromosome, telomeric region
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: 'Site of catalysis: TERT engages the telomeric region of chromosomes to add TTAGGG repeats. UniProt lists Chromosome, telomere as a subcellular location.'
    action: ACCEPT
    reason: Core CC; the telomere is where the catalytic reaction occurs.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003677
    label: DNA binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: TERT binds telomeric ssDNA primer; the generic DNA-binding term is correct but less informative than telomeric DNA binding and is keyword/electronic-derived.
    action: KEEP_AS_NON_CORE
    reason: Correct but generic; specific telomeric DNA binding is the core term.
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003964
    label: RNA-directed DNA polymerase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: Reverse transcriptase activity (EC 2.7.7.49) by which TERT copies the Terc RNA template into telomeric DNA. The conserved RT domain (residues 595-928) with catalytic Mg2+-binding Asp residues underlies telomerase action.
    action: ACCEPT
    reason: Precise MF describing the reverse-transcriptase catalytic mechanism; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005634
    label: nucleus
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: Principal compartment where TERT acts; nuclear import/retention is regulated by AKT phosphorylation and SHP2/PTPN11 dephosphorylation, positioning telomerase for chromosome-end extension.
    action: ACCEPT
    reason: Core CC; nucleus is the canonical site of telomerase action.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005654
    label: nucleoplasm
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: TERT shows diffuse nucleoplasmic distribution; a subnuclear pool that is part of nuclear residence but not the specific telomere/nucleolar site of function.
    action: KEEP_AS_NON_CORE
    reason: Nuclear subcompartment; non-core relative to telomere/nucleolus.
- term:
    id: GO:0005730
    label: nucleolus
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT.
    action: ACCEPT
    reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005737
    label: cytoplasm
  evidence_type: IEA
  original_reference_id: GO_REF:0000044
  review:
    summary: TERT shuttles to the cytoplasm under oxidative stress (CRM1/RAN-dependent, Tyr-697 phosphorylation), a regulated secondary localization rather than its catalytic site.
    action: KEEP_AS_NON_CORE
    reason: Regulated secondary localization (IDA/IEA); not core site of action.
- term:
    id: GO:0008284
    label: positive regulation of cell population proliferation
  evidence_type: IEA
  original_reference_id: GO_REF:0000117
  review:
    summary: TERT supports proliferative capacity of progenitor/cancer cells; a broad downstream effect of enabling continued division, not the molecular core.
    action: KEEP_AS_NON_CORE
    reason: Broad pleiotropic proliferation BP (IEA).
- term:
    id: GO:0016605
    label: PML body
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: PML interaction recruits TERT to PML bodies and inhibits telomerase activity; a regulatory sequestration site rather than the active catalytic location.
    action: KEEP_AS_NON_CORE
    reason: Regulatory/inhibitory localization (IEA/ISO); non-core.
- term:
    id: GO:0016740
    label: transferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: Top-level EC 2 transferase parent; far too general to inform TERT function given the specific polymerase activities already annotated.
    action: MARK_AS_OVER_ANNOTATED
    reason: Root-level MF; uninformative.
- term:
    id: GO:0016779
    label: nucleotidyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: High-level transferase parent; TERT's nucleotidyltransferase chemistry is already captured precisely by telomerase / RNA-directed DNA polymerase activity.
    action: MARK_AS_OVER_ANNOTATED
    reason: Over-general MF parent of the specific catalytic terms.
- term:
    id: GO:0034061
    label: DNA polymerase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000116
  review:
    summary: Generic DNA polymerase term; TERT is specifically a template-directed RNA-dependent DNA polymerase, already captured by the more precise RNA-directed DNA polymerase / telomerase terms.
    action: MARK_AS_OVER_ANNOTATED
    reason: Over-general MF; the RNA-directed (RT) child is the correct specific term.
- term:
    id: GO:0046872
    label: metal ion binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: Keyword-derived term; TERT binds catalytic Mg2+ at the RT active site, but the bare metal-ion term is uninformative compared with the polymerase MF that already implies it.
    action: MARK_AS_OVER_ANNOTATED
    reason: Generic UniProtKB-KW-derived MF; subsumed by catalytic activity.
- term:
    id: GO:1990904
    label: ribonucleoprotein complex
  evidence_type: IEA
  original_reference_id: GO_REF:0000043
  review:
    summary: Generic RNP parent; true because telomerase is an RNP, but uninformative relative to the specific telomerase holoenzyme/catalytic-core complex terms.
    action: KEEP_AS_NON_CORE
    reason: Over-general CC parent of the telomerase complex (IEA).
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:19571879
  review:
    summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms.
    action: MARK_AS_OVER_ANNOTATED
    reason: Uninformative generic MF; specific partner terms preferred.
- term:
    id: GO:0000049
    label: tRNA binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: An electronically inferred tRNA-binding activity; plausible given TERT's RNA-binding fold but not part of the canonical Terc-templated mechanism.
    action: KEEP_AS_NON_CORE
    reason: Electronic non-core RNA-binding (IEA/ISO).
- term:
    id: GO:0000333
    label: telomerase catalytic core complex
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase.
    action: ACCEPT
    reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA).
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0001172
    label: RNA-templated transcription
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Process term associated with the non-canonical TERT-RMRP RdRP activity; not the canonical telomere-extension role.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical process linked to RMRP RdRP; electronic.
- term:
    id: GO:0001223
    label: transcription coactivator binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role.
    action: KEEP_AS_NON_CORE
    reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
- term:
    id: GO:0003723
    label: RNA binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation.
    action: MARK_AS_OVER_ANNOTATED
    reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
- term:
    id: GO:0003968
    label: RNA-directed RNA polymerase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: A non-canonical RdRP activity has been proposed for TERT (with RMRP RNA, the TERT-RMRP complex), but this is contested and supported only by electronic transfer; not part of the canonical telomerase MF.
    action: KEEP_AS_NON_CORE
    reason: Contested non-canonical activity; electronic (IEA/ISO) only.
- term:
    id: GO:0005697
    label: telomerase holoenzyme complex
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1.
    action: ACCEPT
    reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005739
    label: mitochondrion
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Cytosolic pool consistent with stress-regulated nuclear export of TERT; secondary to nuclear/telomeric localization.
    action: KEEP_AS_NON_CORE
    reason: Secondary localization (IEA/ISO).
- term:
    id: GO:0006278
    label: RNA-templated DNA biosynthetic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Reverse-transcription process term; correct for TERT but a general restatement of its telomere-templated DNA synthesis already covered by core terms.
    action: KEEP_AS_NON_CORE
    reason: Accurate but redundant BP with core telomerase process.
- term:
    id: GO:0006606
    label: protein import into nucleus
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Reflects regulated nuclear import of TERT (AKT-driven; RAN/XPO1-dependent shuttling); a trafficking/regulatory process supporting, not equal to, the core function.
    action: KEEP_AS_NON_CORE
    reason: Regulatory trafficking BP (IEA/ISO).
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0007005
    label: mitochondrion organization
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Linked to the contested non-canonical mitochondrial role of TERT (ROS/mtDNA biogenesis); a pleiotropic/moonlighting process, not core telomere biology.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical mitochondrial process (IEA/ISO).
- term:
    id: GO:0007507
    label: heart development
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Developmental contribution of telomerase/TERT in cardiac tissue; a pleiotropic developmental role electronically inferred, not the molecular core.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic developmental BP (IEA).
- term:
    id: GO:0016607
    label: nuclear speck
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Reported nuclear-speck localization of TERT is a secondary subnuclear pool, electronically inferred; not the canonical site of telomere extension.
    action: KEEP_AS_NON_CORE
    reason: Secondary subnuclear localization (IEA/ISO).
- term:
    id: GO:0022616
    label: DNA strand elongation
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Describes the elongation step of telomeric DNA synthesis; accurate but a generic facet of the core telomere-extension process.
    action: KEEP_AS_NON_CORE
    reason: Generic BP facet of telomere extension (IEA/ISO).
- term:
    id: GO:0030177
    label: positive regulation of Wnt signaling pathway
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
- term:
    id: GO:0030422
    label: siRNA processing
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Reflects the proposed TERT-RMRP pathway generating RMRP-derived siRNAs; a contested non-canonical role rather than the core telomerase function.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical RMRP-linked role (ISS/ComplexPortal).
- term:
    id: GO:0031379
    label: RNA-directed RNA polymerase complex
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Companion CC for the proposed TERT-RMRP RdRP activity; non-canonical and electronic, retained as a possible moonlighting context rather than the core telomerase complex.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical complex tied to contested RdRP role (IEA/ISO).
- term:
    id: GO:0031647
    label: regulation of protein stability
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT participates in protein-stability regulation (e.g., it is itself controlled by DYRK2/EDVP ubiquitination, and modulates partner stability such as CMIP); a regulatory facet, not core.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic regulatory BP (IEA/ISO).
- term:
    id: GO:0042645
    label: mitochondrial nucleoid
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Association of TERT with mitochondrial nucleoids relates to proposed mtDNA-protective non-canonical roles; electronic and context-dependent, not the canonical function.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical mitochondrial localization (IEA/ISO).
- term:
    id: GO:0042802
    label: identical protein binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Generic self-binding term; TERT can oligomerize but this adds little functional content over the more specific homodimerization terms and is electronic only.
    action: MARK_AS_OVER_ANNOTATED
    reason: Uninformative generic MF (IEA/ISO).
- term:
    id: GO:0042803
    label: protein homodimerization activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT can oligomerize via dedicated oligomerization regions; homodimerization is a structural property relevant to assembly but not the catalytic core function.
    action: KEEP_AS_NON_CORE
    reason: Specific but ancillary structural MF (IEA/ISO).
- term:
    id: GO:0043066
    label: negative regulation of apoptotic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: 'TERT has antiapoptotic/pro-survival activity (UniProt: roles in antiapoptosis), a pleiotropic protective effect downstream of or parallel to telomere maintenance.'
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic pro-survival BP (IEA/ISO).
- term:
    id: GO:0043524
    label: negative regulation of neuron apoptotic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Neuron-specific instance of TERT's antiapoptotic activity, relevant to neuroprotection literature; a downstream tissue-specific effect.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific antiapoptotic BP (IEA/ISO).
- term:
    id: GO:0045766
    label: positive regulation of angiogenesis
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT supports angiogenesis (linked to endothelial survival/VEGF); a downstream vascular role rather than the core telomerase function.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic vascular BP (IEA/ISO).
- term:
    id: GO:0046686
    label: response to cadmium ion
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Electronically inferred stress response to cadmium; a non-specific response-to-stimulus annotation peripheral to TERT's core role.
    action: KEEP_AS_NON_CORE
    reason: Generic stress-response BP (IEA).
- term:
    id: GO:0051087
    label: protein-folding chaperone binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT binds the HSP90/p23 (PTGES3) chaperone machinery required for correct assembly and stabilization of active telomerase; an assembly-support interaction.
    action: KEEP_AS_NON_CORE
    reason: Specific biogenesis-related binding (IEA/ISO); non-core MF.
- term:
    id: GO:0070034
    label: telomerase RNA binding
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity.
    action: ACCEPT
    reason: Specific, informative MF central to holoenzyme assembly and catalysis; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0070200
    label: establishment of protein localization to telomere
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Recruitment of telomerase/TERT to telomeres (via shelterin-linked TPP1/TIN2/POT1b factors); a localization step upstream of catalysis, retained as supporting non-core.
    action: KEEP_AS_NON_CORE
    reason: Recruitment/localization BP (IEA/ISO); supports core but distinct.
- term:
    id: GO:0071456
    label: cellular response to hypoxia
  evidence_type: IEA
  original_reference_id: GO_REF:0000120
  review:
    summary: TERT participates in hypoxic stress responses (mitochondrial/ROS and survival programs); a stress-response role secondary to its catalytic function.
    action: KEEP_AS_NON_CORE
    reason: Stress-response BP (IEA/ISO).
- term:
    id: GO:0071897
    label: DNA biosynthetic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT synthesizes telomeric DNA, so this parent process is true but generic relative to telomere maintenance via telomerase.
    action: KEEP_AS_NON_CORE
    reason: Correct but over-general BP; electronic propagation.
- term:
    id: GO:0090399
    label: replicative senescence
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT activity counteracts replicative senescence by sustaining telomere length; a phenotype-level process downstream of the catalytic role.
    action: KEEP_AS_NON_CORE
    reason: Downstream/phenotypic BP (IEA/ISO).
- term:
    id: GO:0098680
    label: template-free RNA nucleotidyltransferase activity
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Template-free RNA nucleotidyltransferase activity is not a function of TERT, whose defining chemistry is template-directed DNA synthesis from the Terc RNA; this electronic annotation contradicts the established mechanism.
    action: REMOVE
    reason: Electronic (IEA/ISO) and biologically contradicted; TERT is template-dependent.
- term:
    id: GO:0140745
    label: siRNA transcription
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Transcription of siRNA from the RMRP template via the proposed TERT RdRP activity; non-canonical and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical RMRP-linked role (IEA/ISO).
- term:
    id: GO:1900087
    label: positive regulation of G1/S transition of mitotic cell cycle
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Cell-cycle-promoting effect linked to TERT's pro-proliferative/non-canonical signaling; pleiotropic and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic cell-cycle BP (IEA/ISO).
- term:
    id: GO:1902895
    label: positive regulation of miRNA transcription
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Reflects TERT's non-canonical influence on miRNA-gene transcription via chromatin association; part of its moonlighting transcriptional activity.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical transcriptional BP (IEA/ISO).
- term:
    id: GO:1903620
    label: positive regulation of transdifferentiation
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Non-canonical role of TERT in promoting cellular transdifferentiation; context-dependent and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical developmental BP (IEA/ISO).
- term:
    id: GO:1904707
    label: positive regulation of vascular associated smooth muscle cell proliferation
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT promotes proliferation of vascular smooth muscle cells; a tissue-specific downstream proliferative effect.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific proliferation BP (IEA/ISO).
- term:
    id: GO:1904751
    label: positive regulation of protein localization to nucleolus
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Linked to TERT's nucleolar trafficking interactions; a regulatory localization process, electronically inferred and ancillary.
    action: KEEP_AS_NON_CORE
    reason: Regulatory localization BP (IEA/ISO).
- term:
    id: GO:1904754
    label: positive regulation of vascular associated smooth muscle cell migration
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT promotes vascular smooth muscle cell migration; part of its pleiotropic vascular-remodeling effects, electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific migration BP (IEA/ISO).
- term:
    id: GO:1990572
    label: TERT-RMRP complex
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: TERT can associate with the RMRP RNA in a distinct complex linked to the proposed RdRP/siRNA activity; a non-canonical context separate from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical TERT-RMRP complex (ISS/ComplexPortal, IEA).
- term:
    id: GO:2000352
    label: negative regulation of endothelial cell apoptotic process
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Endothelial antiapoptotic effect of TERT linked to vascular/angiogenesis biology; a pleiotropic downstream role.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific antiapoptotic BP (IEA/ISO).
- term:
    id: GO:2000773
    label: negative regulation of cellular senescence
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: By maintaining telomeres, TERT delays senescence; this is a downstream physiological consequence rather than the molecular core function.
    action: KEEP_AS_NON_CORE
    reason: Downstream consequence of telomere maintenance (IEA/ISO).
- term:
    id: GO:2001240
    label: negative regulation of extrinsic apoptotic signaling pathway in absence of ligand
  evidence_type: IEA
  original_reference_id: GO_REF:0000107
  review:
    summary: Specific antiapoptotic pathway facet of TERT's pro-survival activity; pleiotropic and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic antiapoptotic BP (IEA/ISO).
- term:
    id: GO:0000049
    label: tRNA binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: An electronically inferred tRNA-binding activity; plausible given TERT's RNA-binding fold but not part of the canonical Terc-templated mechanism.
    action: KEEP_AS_NON_CORE
    reason: Electronic non-core RNA-binding (IEA/ISO).
- term:
    id: GO:0000333
    label: telomerase catalytic core complex
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase.
    action: ACCEPT
    reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA).
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0000781
    label: chromosome, telomeric region
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: 'Site of catalysis: TERT engages the telomeric region of chromosomes to add TTAGGG repeats. UniProt lists Chromosome, telomere as a subcellular location.'
    action: ACCEPT
    reason: Core CC; the telomere is where the catalytic reaction occurs.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0001172
    label: RNA-templated transcription
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Process term associated with the non-canonical TERT-RMRP RdRP activity; not the canonical telomere-extension role.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical process linked to RMRP RdRP; electronic.
- term:
    id: GO:0001223
    label: transcription coactivator binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role.
    action: KEEP_AS_NON_CORE
    reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
- term:
    id: GO:0003677
    label: DNA binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT binds telomeric ssDNA primer; the generic DNA-binding term is correct but less informative than telomeric DNA binding and is keyword/electronic-derived.
    action: KEEP_AS_NON_CORE
    reason: Correct but generic; specific telomeric DNA binding is the core term.
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003723
    label: RNA binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation.
    action: MARK_AS_OVER_ANNOTATED
    reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
- term:
    id: GO:0003964
    label: RNA-directed DNA polymerase activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reverse transcriptase activity (EC 2.7.7.49) by which TERT copies the Terc RNA template into telomeric DNA. The conserved RT domain (residues 595-928) with catalytic Mg2+-binding Asp residues underlies telomerase action.
    action: ACCEPT
    reason: Precise MF describing the reverse-transcriptase catalytic mechanism; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003968
    label: RNA-directed RNA polymerase activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: A non-canonical RdRP activity has been proposed for TERT (with RMRP RNA, the TERT-RMRP complex), but this is contested and supported only by electronic transfer; not part of the canonical telomerase MF.
    action: KEEP_AS_NON_CORE
    reason: Contested non-canonical activity; electronic (IEA/ISO) only.
- term:
    id: GO:0005634
    label: nucleus
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Principal compartment where TERT acts; nuclear import/retention is regulated by AKT phosphorylation and SHP2/PTPN11 dephosphorylation, positioning telomerase for chromosome-end extension.
    action: ACCEPT
    reason: Core CC; nucleus is the canonical site of telomerase action.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005654
    label: nucleoplasm
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT shows diffuse nucleoplasmic distribution; a subnuclear pool that is part of nuclear residence but not the specific telomere/nucleolar site of function.
    action: KEEP_AS_NON_CORE
    reason: Nuclear subcompartment; non-core relative to telomere/nucleolus.
- term:
    id: GO:0005697
    label: telomerase holoenzyme complex
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1.
    action: ACCEPT
    reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005730
    label: nucleolus
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT.
    action: ACCEPT
    reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005739
    label: mitochondrion
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
- term:
    id: GO:0005829
    label: cytosol
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Cytosolic pool consistent with stress-regulated nuclear export of TERT; secondary to nuclear/telomeric localization.
    action: KEEP_AS_NON_CORE
    reason: Secondary localization (IEA/ISO).
- term:
    id: GO:0006278
    label: RNA-templated DNA biosynthetic process
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reverse-transcription process term; correct for TERT but a general restatement of its telomere-templated DNA synthesis already covered by core terms.
    action: KEEP_AS_NON_CORE
    reason: Accurate but redundant BP with core telomerase process.
- term:
    id: GO:0006606
    label: protein import into nucleus
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reflects regulated nuclear import of TERT (AKT-driven; RAN/XPO1-dependent shuttling); a trafficking/regulatory process supporting, not equal to, the core function.
    action: KEEP_AS_NON_CORE
    reason: Regulatory trafficking BP (IEA/ISO).
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0007005
    label: mitochondrion organization
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Linked to the contested non-canonical mitochondrial role of TERT (ROS/mtDNA biogenesis); a pleiotropic/moonlighting process, not core telomere biology.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical mitochondrial process (IEA/ISO).
- term:
    id: GO:0016605
    label: PML body
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: PML interaction recruits TERT to PML bodies and inhibits telomerase activity; a regulatory sequestration site rather than the active catalytic location.
    action: KEEP_AS_NON_CORE
    reason: Regulatory/inhibitory localization (IEA/ISO); non-core.
- term:
    id: GO:0016607
    label: nuclear speck
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reported nuclear-speck localization of TERT is a secondary subnuclear pool, electronically inferred; not the canonical site of telomere extension.
    action: KEEP_AS_NON_CORE
    reason: Secondary subnuclear localization (IEA/ISO).
- term:
    id: GO:0022616
    label: DNA strand elongation
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Describes the elongation step of telomeric DNA synthesis; accurate but a generic facet of the core telomere-extension process.
    action: KEEP_AS_NON_CORE
    reason: Generic BP facet of telomere extension (IEA/ISO).
- term:
    id: GO:0030177
    label: positive regulation of Wnt signaling pathway
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
- term:
    id: GO:0030422
    label: siRNA processing
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reflects the proposed TERT-RMRP pathway generating RMRP-derived siRNAs; a contested non-canonical role rather than the core telomerase function.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical RMRP-linked role (ISS/ComplexPortal).
- term:
    id: GO:0031379
    label: RNA-directed RNA polymerase complex
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Companion CC for the proposed TERT-RMRP RdRP activity; non-canonical and electronic, retained as a possible moonlighting context rather than the core telomerase complex.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical complex tied to contested RdRP role (IEA/ISO).
- term:
    id: GO:0031647
    label: regulation of protein stability
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT participates in protein-stability regulation (e.g., it is itself controlled by DYRK2/EDVP ubiquitination, and modulates partner stability such as CMIP); a regulatory facet, not core.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic regulatory BP (IEA/ISO).
- term:
    id: GO:0042645
    label: mitochondrial nucleoid
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Association of TERT with mitochondrial nucleoids relates to proposed mtDNA-protective non-canonical roles; electronic and context-dependent, not the canonical function.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical mitochondrial localization (IEA/ISO).
- term:
    id: GO:0042802
    label: identical protein binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Generic self-binding term; TERT can oligomerize but this adds little functional content over the more specific homodimerization terms and is electronic only.
    action: MARK_AS_OVER_ANNOTATED
    reason: Uninformative generic MF (IEA/ISO).
- term:
    id: GO:0042803
    label: protein homodimerization activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT can oligomerize via dedicated oligomerization regions; homodimerization is a structural property relevant to assembly but not the catalytic core function.
    action: KEEP_AS_NON_CORE
    reason: Specific but ancillary structural MF (IEA/ISO).
- term:
    id: GO:0043066
    label: negative regulation of apoptotic process
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: 'TERT has antiapoptotic/pro-survival activity (UniProt: roles in antiapoptosis), a pleiotropic protective effect downstream of or parallel to telomere maintenance.'
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic pro-survival BP (IEA/ISO).
- term:
    id: GO:0043524
    label: negative regulation of neuron apoptotic process
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: Neuron-specific instance of TERT's antiapoptotic activity, relevant to neuroprotection literature; a downstream tissue-specific effect.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific antiapoptotic BP (IEA/ISO).
- term:
    id: GO:0045766
    label: positive regulation of angiogenesis
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: TERT supports angiogenesis (linked to endothelial survival/VEGF); a downstream vascular role rather than the core telomerase function.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic vascular BP (IEA/ISO).
- term:
    id: GO:0051087
    label: protein-folding chaperone binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT binds the HSP90/p23 (PTGES3) chaperone machinery required for correct assembly and stabilization of active telomerase; an assembly-support interaction.
    action: KEEP_AS_NON_CORE
    reason: Specific biogenesis-related binding (IEA/ISO); non-core MF.
- term:
    id: GO:0060253
    label: negative regulation of glial cell proliferation
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: Tissue-specific proliferation-regulatory effect attributed to TERT; pleiotropic and supported only by orthology transfer.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic tissue-specific BP (ISO).
- term:
    id: GO:0070034
    label: telomerase RNA binding
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity.
    action: ACCEPT
    reason: Specific, informative MF central to holoenzyme assembly and catalysis; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0070200
    label: establishment of protein localization to telomere
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Recruitment of telomerase/TERT to telomeres (via shelterin-linked TPP1/TIN2/POT1b factors); a localization step upstream of catalysis, retained as supporting non-core.
    action: KEEP_AS_NON_CORE
    reason: Recruitment/localization BP (IEA/ISO); supports core but distinct.
- term:
    id: GO:0071456
    label: cellular response to hypoxia
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT participates in hypoxic stress responses (mitochondrial/ROS and survival programs); a stress-response role secondary to its catalytic function.
    action: KEEP_AS_NON_CORE
    reason: Stress-response BP (IEA/ISO).
- term:
    id: GO:0071897
    label: DNA biosynthetic process
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT synthesizes telomeric DNA, so this parent process is true but generic relative to telomere maintenance via telomerase.
    action: KEEP_AS_NON_CORE
    reason: Correct but over-general BP; electronic propagation.
- term:
    id: GO:0090399
    label: replicative senescence
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT activity counteracts replicative senescence by sustaining telomere length; a phenotype-level process downstream of the catalytic role.
    action: KEEP_AS_NON_CORE
    reason: Downstream/phenotypic BP (IEA/ISO).
- term:
    id: GO:0098680
    label: template-free RNA nucleotidyltransferase activity
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Template-free RNA nucleotidyltransferase activity is not a function of TERT, whose defining chemistry is template-directed DNA synthesis from the Terc RNA; this electronic annotation contradicts the established mechanism.
    action: REMOVE
    reason: Electronic (IEA/ISO) and biologically contradicted; TERT is template-dependent.
- term:
    id: GO:0140745
    label: siRNA transcription
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Transcription of siRNA from the RMRP template via the proposed TERT RdRP activity; non-canonical and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical RMRP-linked role (IEA/ISO).
- term:
    id: GO:1900087
    label: positive regulation of G1/S transition of mitotic cell cycle
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: Cell-cycle-promoting effect linked to TERT's pro-proliferative/non-canonical signaling; pleiotropic and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic cell-cycle BP (IEA/ISO).
- term:
    id: GO:1902895
    label: positive regulation of miRNA transcription
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Reflects TERT's non-canonical influence on miRNA-gene transcription via chromatin association; part of its moonlighting transcriptional activity.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical transcriptional BP (IEA/ISO).
- term:
    id: GO:1903620
    label: positive regulation of transdifferentiation
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: Non-canonical role of TERT in promoting cellular transdifferentiation; context-dependent and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical developmental BP (IEA/ISO).
- term:
    id: GO:1904707
    label: positive regulation of vascular associated smooth muscle cell proliferation
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: TERT promotes proliferation of vascular smooth muscle cells; a tissue-specific downstream proliferative effect.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific proliferation BP (IEA/ISO).
- term:
    id: GO:1904751
    label: positive regulation of protein localization to nucleolus
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Linked to TERT's nucleolar trafficking interactions; a regulatory localization process, electronically inferred and ancillary.
    action: KEEP_AS_NON_CORE
    reason: Regulatory localization BP (IEA/ISO).
- term:
    id: GO:1904754
    label: positive regulation of vascular associated smooth muscle cell migration
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: TERT promotes vascular smooth muscle cell migration; part of its pleiotropic vascular-remodeling effects, electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific migration BP (IEA/ISO).
- term:
    id: GO:1990572
    label: TERT-RMRP complex
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: TERT can associate with the RMRP RNA in a distinct complex linked to the proposed RdRP/siRNA activity; a non-canonical context separate from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical TERT-RMRP complex (ISS/ComplexPortal, IEA).
- term:
    id: GO:2000352
    label: negative regulation of endothelial cell apoptotic process
  evidence_type: ISO
  original_reference_id: GO_REF:0000096
  review:
    summary: Endothelial antiapoptotic effect of TERT linked to vascular/angiogenesis biology; a pleiotropic downstream role.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific antiapoptotic BP (IEA/ISO).
- term:
    id: GO:2000773
    label: negative regulation of cellular senescence
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: By maintaining telomeres, TERT delays senescence; this is a downstream physiological consequence rather than the molecular core function.
    action: KEEP_AS_NON_CORE
    reason: Downstream consequence of telomere maintenance (IEA/ISO).
- term:
    id: GO:2001240
    label: negative regulation of extrinsic apoptotic signaling pathway in absence of ligand
  evidence_type: ISO
  original_reference_id: GO_REF:0000119
  review:
    summary: Specific antiapoptotic pathway facet of TERT's pro-survival activity; pleiotropic and electronically inferred.
    action: KEEP_AS_NON_CORE
    reason: Pleiotropic antiapoptotic BP (IEA/ISO).
- term:
    id: GO:0000722
    label: telomere maintenance via recombination
  evidence_type: NAS
  original_reference_id: PMID:20351177
  review:
    summary: ALT (recombination-based) telomere maintenance is telomerase-INDEPENDENT and is not TERT's mechanism; TERT acts via telomerase. The NAS annotation appears misattributed, but as non-electronic evidence it is flagged not removed.
    action: UNDECIDED
    reason: ALT is telomerase-independent; NAS evidence (not IEA/ISO), so flag not REMOVE.
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: NAS
  original_reference_id: PMID:20351177
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005697
    label: telomerase holoenzyme complex
  evidence_type: ISS
  original_reference_id: GO_REF:0000024
  review:
    summary: TERT is the catalytic subunit of the holoenzyme, which also contains Terc, WRAP53/TCAB1 and the H/ACA proteins DKC1, NOP10, NHP2 and GAR1, plus associated TEP1/SMG6/POT1.
    action: ACCEPT
    reason: Core CC; UniProt SUBUNIT defines TERT as the holoenzyme catalytic component.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: ISS
  original_reference_id: GO_REF:0000024
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0003723
    label: RNA binding
  evidence_type: IPI
  original_reference_id: PMID:16507993
  review:
    summary: Broad RNA-binding term; TERT's functionally relevant RNA interaction is with Terc, already captured by the specific telomerase RNA binding annotation.
    action: MARK_AS_OVER_ANNOTATED
    reason: Over-broad nucleic-acid binding; specific telomerase RNA binding present.
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: TAS
  original_reference_id: PMID:16107853
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0007004
    label: telomere maintenance via telomerase
  evidence_type: TAS
  original_reference_id: PMID:16107853
  review:
    summary: The canonical pathway in which TERT extends telomeres to counter the end-replication problem; mTert-null mice show progressive multigenerational telomere erosion and signal-free chromosome ends.
    action: ACCEPT
    reason: Core BP; mouse genetic evidence establishes telomerase-dependent maintenance.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:24970747
  review:
    summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms.
    action: MARK_AS_OVER_ANNOTATED
    reason: Uninformative generic MF; specific partner terms preferred.
- term:
    id: GO:0005737
    label: cytoplasm
  evidence_type: IDA
  original_reference_id: PMID:24970747
  review:
    summary: TERT shuttles to the cytoplasm under oxidative stress (CRM1/RAN-dependent, Tyr-697 phosphorylation), a regulated secondary localization rather than its catalytic site.
    action: KEEP_AS_NON_CORE
    reason: Regulated secondary localization (IDA/IEA); not core site of action.
- term:
    id: GO:0005886
    label: plasma membrane
  evidence_type: IDA
  original_reference_id: PMID:24970747
  review:
    summary: An IDA plasma-membrane localization is reported but is a minor/atypical pool far from TERT's nuclear telomere-extension role; retained without endorsing it as core.
    action: KEEP_AS_NON_CORE
    reason: Atypical secondary localization (IDA); experimental, so downgraded not removed.
- term:
    id: GO:0046326
    label: positive regulation of D-glucose import across plasma membrane
  evidence_type: IMP
  original_reference_id: PMID:24970747
  review:
    summary: An IMP-supported metabolic effect of TERT on glucose uptake; a non-canonical metabolic role distinct from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical metabolic BP (IMP); experimental, downgrade not remove.
- term:
    id: GO:0070034
    label: telomerase RNA binding
  evidence_type: IPI
  original_reference_id: PMID:16507993
  review:
    summary: TERT binds the Terc/TR template via RNA-interacting domains RD1 and RD2 (pseudoknot-template and CR4/5 regions), an essential determinant of template engagement and repeat-addition processivity.
    action: ACCEPT
    reason: Specific, informative MF central to holoenzyme assembly and catalysis; core.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0030177
    label: positive regulation of Wnt signaling pathway
  evidence_type: IGI
  original_reference_id: PMID:19571879
  review:
    summary: TERT modulates Wnt/beta-catenin signaling by associating with SMARCA4 on target-gene chromatin (Park et al. 2009); a well-supported non-canonical role distinct from telomere extension.
    action: KEEP_AS_NON_CORE
    reason: Non-canonical signaling role (IGI/IEA/ISO); moonlighting, keep non-core.
- term:
    id: GO:2000648
    label: positive regulation of stem cell proliferation
  evidence_type: IMP
  original_reference_id: PMID:16107853
  review:
    summary: TERT promotes proliferation of stem/progenitor cells (IMP), consistent with its expression in progenitor compartments; an important but downstream physiological role.
    action: KEEP_AS_NON_CORE
    reason: Stem-cell physiology BP (IMP); experimental, downgrade to non-core.
- term:
    id: GO:0005515
    label: protein binding
  evidence_type: IPI
  original_reference_id: PMID:17130244
  review:
    summary: Bare 'protein binding' conveys no specific TERT function; its many partners (HSP90, TCAB1, SMARCA4, PIF1, etc.) are better captured by specific binding/complex terms.
    action: MARK_AS_OVER_ANNOTATED
    reason: Uninformative generic MF; specific partner terms preferred.
- term:
    id: GO:0005730
    label: nucleolus
  evidence_type: ISS
  original_reference_id: GO_REF:0000024
  review:
    summary: TERT is enriched in nucleoli of certain cell types; nucleolar localization (mediated via NCL interaction) is part of telomerase trafficking/biogenesis and is well documented for TERT.
    action: ACCEPT
    reason: Core/canonical TERT subnuclear localization (ISS/ISO), consistent with UniProt.
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0000333
    label: telomerase catalytic core complex
  evidence_type: IMP
  original_reference_id: PMID:16037417
  review:
    summary: TERT plus the Terc RNA constitute the catalytic core responsible for DNA extension. This minimal complex is the functional engine of telomerase.
    action: ACCEPT
    reason: Core CC; TERT is the protein component of the catalytic core (IMP/IBA).
    supported_by:
    - reference_id: UniProt:O70372
      supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
    - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
      supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.
- term:
    id: GO:0042635
    label: positive regulation of hair cycle
  evidence_type: IMP
  original_reference_id: PMID:16107853
  review:
    summary: TERT promotes hair-follicle stem cell activation and anagen entry (IMP, a catalysis-independent function shown in mouse skin); a notable tissue-specific moonlighting role.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific stem-cell BP (IMP); experimental, keep as non-core.
- term:
    id: GO:0005739
    label: mitochondrion
  evidence_type: IDA
  original_reference_id: PMID:21937513
  review:
    summary: A mitochondrial TERT pool with non-canonical roles in ROS handling and mtDNA protection has been reported, but this moonlighting localization is context-dependent and distinct from telomere maintenance.
    action: KEEP_AS_NON_CORE
    reason: Contested non-canonical localization (IDA/IEA/ISO); keep non-core.
- term:
    id: GO:0042635
    label: positive regulation of hair cycle
  evidence_type: IMP
  original_reference_id: PMID:16037417
  review:
    summary: TERT promotes hair-follicle stem cell activation and anagen entry (IMP, a catalysis-independent function shown in mouse skin); a notable tissue-specific moonlighting role.
    action: KEEP_AS_NON_CORE
    reason: Tissue-specific stem-cell BP (IMP); experimental, keep as non-core.
- term:
    id: GO:2000648
    label: positive regulation of stem cell proliferation
  evidence_type: IMP
  original_reference_id: PMID:16037417
  review:
    summary: TERT promotes proliferation of stem/progenitor cells (IMP), consistent with its expression in progenitor compartments; an important but downstream physiological role.
    action: KEEP_AS_NON_CORE
    reason: Stem-cell physiology BP (IMP); experimental, downgrade to non-core.
- term:
    id: GO:0001223
    label: transcription coactivator binding
  evidence_type: IPI
  original_reference_id: PMID:19571879
  review:
    summary: Captures TERT's chromatin/transcription interactions (e.g., SMARCA4/BRG1 in Wnt target-gene regulation), part of its non-canonical transcriptional role.
    action: KEEP_AS_NON_CORE
    reason: Specific binding tied to non-canonical transcriptional role (IPI/IEA/ISO).
- term:
    id: GO:0003720
    label: telomerase activity
  evidence_type: IDA
  original_reference_id: PMID:14701760
  review:
    summary: "Defining catalytic activity of TERT: the RNA-dependent processive addition of TTAGGG telomeric repeats to 3' chromosome ends. mTert loss abolishes detectable telomerase activity in vivo. Core function."
    action: ACCEPT
    reason: Catalytic core MF; directly supported by mouse IDA/TAS and conserved IBA evidence.
references:
- id: GO_REF:0000002
  title: Gene Ontology annotation through association of InterPro records with GO terms
  findings: []
- id: GO_REF:0000024
  title: Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity
  findings: []
- 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:0000096
  title: Automated transfer of experimentally-verified manual GO annotation data to mouse-rat orthologs
  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:0000119
  title: Automated transfer of experimentally-verified manual GO annotation data to mouse-human orthologs
  findings: []
- id: GO_REF:0000120
  title: Combined Automated Annotation using Multiple IEA Methods
  findings: []
- id: PMID:14701760
  title: Genomic instability and enhanced radiosensitivity in Hsp70.1- and Hsp70.3-deficient mice.
  findings:
  - statement: The cached publication is about Hsp70.1/Hsp70.3-deficient mice and does not support TERT telomerase activity
- id: PMID:16037417
  title: Effects of telomerase and telomere length on epidermal stem cell behavior.
  findings: []
- id: PMID:16107853
  title: Conditional telomerase induction causes proliferation of hair follicle stem cells.
  findings: []
- id: PMID:16507993
  title: Regulation of cellular immortalization and steady-state levels of the telomerase reverse transcriptase through its carboxy-terminal domain.
  findings: []
- id: PMID:17130244
  title: Murine Pif1 interacts with telomerase and is dispensable for telomere function in vivo.
  findings: []
- id: PMID:19571879
  title: Telomerase modulates Wnt signalling by association with target gene chromatin.
  findings: []
- id: PMID:20351177
  title: Specificity and stoichiometry of subunit interactions in the human telomerase holoenzyme assembled in vivo.
  findings: []
- id: PMID:21937513
  title: Human telomerase acts as a hTR-independent reverse transcriptase in mitochondria.
  findings: []
- id: PMID:24970747
  title: Extra-nuclear telomerase reverse transcriptase (TERT) regulates glucose transport in skeletal muscle cells.
  findings: []
- id: UniProt:O70372
  title: UniProtKB record for mouse Tert (O70372)
  findings: []
- id: file:mouse/Tert/Tert-deep-research-falcon.md
  title: Falcon deep research synthesis for mouse Tert
  findings: []
core_functions:
- molecular_function:
    id: GO:0003964
    label: RNA-directed DNA polymerase activity
  description: Catalyzes telomerase RNA-templated addition of TTAGGG telomeric repeats to chromosome ends as the catalytic protein subunit of telomerase.
  in_complex:
    id: GO:0000333
    label: telomerase catalytic core complex
  locations:
  - id: GO:0005634
    label: nucleus
  - id: GO:0005730
    label: nucleolus
  - id: GO:0000781
    label: chromosome, telomeric region
  directly_involved_in:
  - id: GO:0007004
    label: telomere maintenance via telomerase
  supported_by:
  - reference_id: UniProt:O70372
    supporting_text: Catalytic component of the teleromerase holoenzyme complex whose main activity is the elongation of telomeres by acting as a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.
  - reference_id: file:mouse/Tert/Tert-deep-research-falcon.md
    supporting_text: Mouse **Tert (UniProt O70372)** encodes the **telomerase reverse transcriptase**, whose primary function is to **extend telomeric (TTAGGG)n repeats** at chromosome ends as the catalytic core of the telomerase RNP.

Gene Description

Existing Annotations Review

Core Functions

Catalyzes telomerase RNA-templated addition of TTAGGG telomeric repeats to chromosome ends as the catalytic protein subunit of telomerase.

References

Deep Research

Falcon

Research report: Mouse Tert (telomerase reverse transcriptase; UniProt O70372) functional annotation

1) Key concepts and definitions (current understanding)

2) Recent developments and latest research (prioritize 2023–2024)

2.1 Structural/biogenesis advances informing functional annotation

2.2 2023–2024 synthesis of non-canonical roles (expert reviews)

2.3 Mouse-relevant 2024 primary evidence for a non-canonical immunology mechanism

3) Current applications and real-world implementations

3.1 Core experimental implementations in mouse telomere biology

3.2 Mouse model implementations

3.3 Translational/clinical-facing implementations (2024 synthesis)

4) Expert opinions and analysis (authoritative synthesis)

5) Relevant statistics and data (recent and foundational quantitative evidence)

Consolidated functional-annotation summary table

Visual evidence (structural biology supporting conserved partners/biogenesis)

Concluding functional annotation statement (mouse-focused)

Citations

📄 View Raw YAML