RARA encodes retinoic acid receptor alpha, a ligand-activated nuclear receptor and sequence-specific RNA polymerase II transcription factor. In RXR heterodimers, RARA binds retinoic acid response elements in nuclear chromatin and switches between unliganded NCoR/SMRT/HDAC-mediated repression and retinoid-induced coactivator recruitment. The core function is retinoic acid receptor signaling through direct regulation of retinoid-responsive transcription; developmental, immune, proliferation, and disease/fusion phenotypes are downstream or context-specific outputs.
| GO Term | Evidence | Action | Reason |
|---|---|---|---|
| GO:0000122 negative regulation of transcription by RNA polymerase II | IBA GO_REF:0000033 | ACCEPT | Summary: Supported core repressive mode of RARA-mediated RNA polymerase II transcription regulation. Reason: RARA-RXR can repress RNA polymerase II transcription through DNA-bound corepressor complexes in the absence of ligand. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0004879 nuclear receptor activity | IBA GO_REF:0000033 | ACCEPT | Summary: Core molecular function: RARA is a retinoic-acid-binding nuclear receptor transcription factor. Reason: Nuclear receptor activity is the central molecular function of RARA, integrating retinoid ligand binding, RXR heterodimerization, RARE binding, and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005634 nucleus | IBA GO_REF:0000033 | ACCEPT | Summary: Core nuclear localization for the RARA transcription factor. Reason: RARA is primarily a nuclear transcription factor whose direct function occurs at nuclear response elements. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0030154 cell differentiation | IBA GO_REF:0000033 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IBA GO_REF:0000033 | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0090575 RNA polymerase II transcription regulator complex | IBA GO_REF:0000033 | ACCEPT | Summary: Supported transcription regulator complex annotation for RARA-RXR/cofactor assemblies. Reason: RARA functions in RNA polymerase II transcription-regulator complexes with RXR and ligand-dependent coregulators. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-uniprot.txt ComplexPortal; CPX-508; RXRalpha-RARalpha retinoic acid receptor complex. |
| GO:0000978 RNA polymerase II cis-regulatory region sequence-specific DNA binding | IBA GO_REF:0000033 | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0048384 retinoic acid receptor signaling pathway | IBA GO_REF:0000033 | ACCEPT | Summary: Core biological process: RARA mediates retinoic acid receptor signaling through ligand-dependent transcriptional regulation. Reason: Retinoic acid receptor signaling is the direct pathway in which RARA transduces retinoid ligand binding into RARE-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0003677 DNA binding | IEA GO_REF:0000120 | MODIFY | Summary: The generic DNA-binding term should be replaced by RARA-specific RARE/RNA polymerase II cis-regulatory DNA-binding terms. Reason: RARA is not just a generic DNA-binding protein; the supported activity is sequence-specific binding to RAREs and RNA polymerase II cis-regulatory regions. Proposed replacements: retinoic acid-responsive element binding RNA polymerase II cis-regulatory region sequence-specific DNA binding Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0003700 DNA-binding transcription factor activity | IEA GO_REF:0000120 | MODIFY | Summary: The generic DNA-binding transcription factor term should be narrowed to RARA nuclear receptor/RNA polymerase II transcription factor activity. Reason: RARA is a ligand-activated nuclear receptor and RNA polymerase II transcription factor. The replacement terms capture the specific transcription-factor class and regulatory target. Proposed replacements: nuclear receptor activity DNA-binding transcription factor activity, RNA polymerase II-specific Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0004879 nuclear receptor activity | IEA GO_REF:0000120 | ACCEPT | Summary: Core molecular function: RARA is a retinoic-acid-binding nuclear receptor transcription factor. Reason: Nuclear receptor activity is the central molecular function of RARA, integrating retinoid ligand binding, RXR heterodimerization, RARE binding, and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005634 nucleus | IEA GO_REF:0000120 | ACCEPT | Summary: Core nuclear localization for the RARA transcription factor. Reason: RARA is primarily a nuclear transcription factor whose direct function occurs at nuclear response elements. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0005654 nucleoplasm | IEA GO_REF:0000117 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005737 cytoplasm | IEA GO_REF:0000120 | KEEP AS NON CORE | Summary: Supported or plausible cytoplasmic/perinuclear pool, but non-core relative to nuclear/chromatin transcriptional regulation. Reason: RARA can have cytoplasmic or regulated translocation pools, but direct GO-core function occurs as a nuclear/chromatin-associated transcription factor. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0006355 regulation of DNA-templated transcription | IEA GO_REF:0000002 | MODIFY | Summary: The generic regulation of DNA-templated transcription term should be narrowed to RARA RNA polymerase II transcription regulation. Reason: RARA directly regulates RNA polymerase II target genes through ligand-dependent activation and unliganded repression; the parent term is less informative. Proposed replacements: positive regulation of transcription by RNA polymerase II negative regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0008270 zinc ion binding | IEA GO_REF:0000120 | KEEP AS NON CORE | Summary: Zinc ion binding is valid for the nuclear receptor DNA-binding domain but non-core relative to receptor/DNA-binding activity. Reason: RARA has a zinc-finger DNA-binding domain, but zinc binding is a structural feature rather than the core curatable function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0043565 sequence-specific DNA binding | IEA GO_REF:0000120 | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0046872 metal ion binding | IEA GO_REF:0000043 | MODIFY | Summary: The generic metal ion binding term should be narrowed to zinc ion binding. Reason: The relevant metal-binding biology is the zinc-finger DNA-binding domain of a nuclear receptor. Proposed replacements: zinc ion binding Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0048384 retinoic acid receptor signaling pathway | IEA GO_REF:0000002 | ACCEPT | Summary: Core biological process: RARA mediates retinoic acid receptor signaling through ligand-dependent transcriptional regulation. Reason: Retinoic acid receptor signaling is the direct pathway in which RARA transduces retinoid ligand binding into RARE-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:1990837 sequence-specific double-stranded DNA binding | IEA GO_REF:0000117 | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0005515 protein binding | IPI PMID:10698945 Structure of the RXR-RAR DNA-binding complex on the retinoic... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:16189514 Towards a proteome-scale map of the human protein-protein in... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:16456540 P38MAPK-dependent phosphorylation and degradation of SRC-3/A... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:16606617 Additional sex comb-like 1 (ASXL1), in cooperation with SRC-... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:16769902 Phosphorylation by PKA potentiates retinoic acid receptor al... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:17560333 Role of the polycomb repressive complex 2 in acute promyeloc... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:17641689 MED25 is distinct from TRAP220/MED1 in cooperating with CBP ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:18048326 Identification of retinoic acid as an inhibitor of transcrip... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:19345331 ZNF423 is critically required for retinoic acid-induced diff... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:19934264 Reciprocal roles of SIRT1 and SKIP in the regulation of RAR ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:20133701 LIM protein Ajuba functions as a nuclear receptor corepresso... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:20211142 An atlas of combinatorial transcriptional regulation in mous... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:20543827 A unique secondary-structure switch controls constitutive ge... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:21478865 Common architecture of nuclear receptor heterodimers on DNA ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:21516116 Next-generation sequencing to generate interactome datasets. | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:21988832 Toward an understanding of the protein interaction network o... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:22056876 A retinoic acid receptor RARα pool present in membrane lipid... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:22351778 Familial focal segmental glomerulosclerosis (FSGS)-linked α-... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:23518351 The histone demethylase PHF8 governs retinoic acid response ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:23693014 Activation of Akt pathway by transcription-independent mecha... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:24819975 Small ubiquitin-related modifier-1 modification regulates al... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:25036637 A quantitative chaperone interaction network reveals the arc... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:25241761 Using an in situ proximity ligation assay to systematically ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:25303530 Enhancer activation requires trans-recruitment of a mega tra... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:25416956 A proteome-scale map of the human interactome network. | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:26871637 Widespread Expansion of Protein Interaction Capabilities by ... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:29892012 An interactome perturbation framework prioritizes damaging m... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:31515488 Extensive disruption of protein interactions by genetic vari... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:32296183 A reference map of the human binary protein interactome. | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:35512704 Systematic discovery of mutation-directed neo-protein-protei... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005515 protein binding | IPI PMID:9653119 The TRAP220 component of a thyroid hormone receptor- associa... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0000900 mRNA regulatory element binding translation repressor activity | IEA GO_REF:0000107 | UNDECIDED | Summary: IEA mRNA/translation-repressor transfer is plausible enough to retain for specialist review, but was not evaluated in this Falcon synthesis. Reason: The Falcon synthesis supports RARA's canonical DNA-bound nuclear receptor function and does not directly support mRNA regulatory element binding or translation repression. However, the GOA row is an Ensembl Compara transfer from rat RARalpha evidence (UniProtKB:A0A0G2JW78; ENSRNOP00000069776), and rodent neuronal RARalpha translation-regulatory literature was not evaluated in this pass. Do not remove without reviewing that specialist literature. |
| GO:0000976 transcription cis-regulatory region binding | IEA GO_REF:0000107 | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0000977 RNA polymerase II transcription regulatory region sequence-specific DNA binding | IEA GO_REF:0000107 | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0001223 transcription coactivator binding | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported coactivator/corepressor binding mechanism, but binding terms are secondary to the core receptor transcription-factor activity. Reason: RARA uses cofactor binding to switch between repression and activation, but the core function is ligand-dependent DNA-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. |
| GO:0001889 liver development | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0007281 germ cell development | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0007565 female pregnancy | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This broad response/development annotation is weakly connected to direct RARA function and likely overstates downstream context-specific biology. Reason: The core evidence supports direct nuclear receptor transcriptional regulation. Broad organismal or stimulus-response terms should be used cautiously unless direct RARA targets and cell context are shown. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0008285 negative regulation of cell population proliferation | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported cell proliferation, apoptosis, cell-cycle, or binding effects are context-specific downstream outputs of RARA signaling. Reason: These annotations can be retained as non-core where experiments support cellular phenotypes, but they are downstream of direct retinoid receptor transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. |
| GO:0008584 male gonad development | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0010628 positive regulation of gene expression | IEA GO_REF:0000107 | MODIFY | Summary: The broad positive regulation of gene expression term should be narrowed to positive regulation of RNA polymerase II transcription. Reason: RARA directly controls retinoid-responsive transcriptional programs; the supported direct process is RNA polymerase II transcriptional activation rather than gene expression broadly. Proposed replacements: positive regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0017148 negative regulation of translation | IEA GO_REF:0000107 | UNDECIDED | Summary: IEA translation-regulation transfer is plausible enough to retain for specialist review, but was not evaluated in this Falcon synthesis. Reason: The Falcon synthesis supports RARA's canonical DNA-bound nuclear receptor function and does not directly support negative regulation of translation. However, the GOA row is an Ensembl Compara transfer from rat RARalpha evidence (UniProtKB:A0A0G2JW78; ENSRNOP00000069776), and rodent neuronal RARalpha translation-regulatory literature was not evaluated in this pass. Do not remove without reviewing that specialist literature. |
| GO:0021766 hippocampus development | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0030425 dendrite | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This localization is over-emphasized relative to the core nuclear/chromatin RARA function. Reason: RARA is primarily nuclear/chromatin-associated. Dendrite or plasma membrane annotations may reflect specialized or indirect contexts but do not represent the core function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0030850 prostate gland development | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0031641 regulation of myelination | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0032355 response to estradiol | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported estrogen cross-talk context, but non-core relative to canonical retinoic acid receptor function. Reason: RARA can cooperate with estrogen receptor programs in breast cancer cells, but this is a context-specific regulatory interaction rather than the core retinoid receptor function. Supporting Evidence: PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0033189 response to vitamin A | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported retinoid/vitamin A response annotation, but broader than the direct RARA receptor signaling pathway. Reason: RARA is a direct mediator of retinoic acid signaling. General cellular response terms are valid but less precise than retinoic acid receptor signaling and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0034097 response to cytokine | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This broad response/development annotation is weakly connected to direct RARA function and likely overstates downstream context-specific biology. Reason: The core evidence supports direct nuclear receptor transcriptional regulation. Broad organismal or stimulus-response terms should be used cautiously unless direct RARA targets and cell context are shown. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0042826 histone deacetylase binding | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported coactivator/corepressor binding mechanism, but binding terms are secondary to the core receptor transcription-factor activity. Reason: RARA uses cofactor binding to switch between repression and activation, but the core function is ligand-dependent DNA-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. |
| GO:0042981 regulation of apoptotic process | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported cell proliferation, apoptosis, cell-cycle, or binding effects are context-specific downstream outputs of RARA signaling. Reason: These annotations can be retained as non-core where experiments support cellular phenotypes, but they are downstream of direct retinoid receptor transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. |
| GO:0045471 response to ethanol | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This broad response/development annotation is weakly connected to direct RARA function and likely overstates downstream context-specific biology. Reason: The core evidence supports direct nuclear receptor transcriptional regulation. Broad organismal or stimulus-response terms should be used cautiously unless direct RARA targets and cell context are shown. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0045666 positive regulation of neuron differentiation | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0048027 mRNA 5'-UTR binding | IEA GO_REF:0000107 | UNDECIDED | Summary: IEA mRNA 5'-UTR-binding transfer is plausible enough to retain for specialist review, but was not evaluated in this Falcon synthesis. Reason: The Falcon synthesis supports RARA's canonical DNA-bound nuclear receptor function and does not directly support mRNA 5'-UTR binding. However, the GOA row is an Ensembl Compara transfer from rat RARalpha evidence (UniProtKB:A0A0G2JW78; ENSRNOP00000069776), and rodent neuronal RARalpha translation-regulatory literature was not evaluated in this pass. Do not remove without reviewing that specialist literature. |
| GO:0048167 regulation of synaptic plasticity | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This broad response/development annotation is weakly connected to direct RARA function and likely overstates downstream context-specific biology. Reason: The core evidence supports direct nuclear receptor transcriptional regulation. Broad organismal or stimulus-response terms should be used cautiously unless direct RARA targets and cell context are shown. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0048471 perinuclear region of cytoplasm | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported or plausible cytoplasmic/perinuclear pool, but non-core relative to nuclear/chromatin transcriptional regulation. Reason: RARA can have cytoplasmic or regulated translocation pools, but direct GO-core function occurs as a nuclear/chromatin-associated transcription factor. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0060010 Sertoli cell fate commitment | IEA GO_REF:0000107 | KEEP AS NON CORE | Summary: Supported developmental or differentiation role, but downstream and context-dependent relative to core RARA transcriptional regulation. Reason: RARA-dependent retinoid signaling influences differentiation and development, but these are downstream programs and should not be treated as the core molecular function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:19917671 These studies demonstrate, for the first time, that RA couples G(1) arrest to transcriptional control of cancer cell differentiation by suppressing CAK phosphorylation of RARalpha to release transcriptional repression. |
| GO:0071222 cellular response to lipopolysaccharide | IEA GO_REF:0000107 | MARK AS OVER ANNOTATED | Summary: This broad response/development annotation is weakly connected to direct RARA function and likely overstates downstream context-specific biology. Reason: The core evidence supports direct nuclear receptor transcriptional regulation. Broad organismal or stimulus-response terms should be used cautiously unless direct RARA targets and cell context are shown. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:1901363 heterocyclic compound binding | IEA GO_REF:0000107 | MODIFY | Summary: The generic heterocyclic compound binding term should be replaced by retinoic acid binding. Reason: The relevant ligand is retinoic acid/retinoids, not heterocyclic compounds broadly. Proposed replacements: retinoic acid binding Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005654 nucleoplasm | IDA GO_REF:0000052 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005730 nucleolus | IDA GO_REF:0000052 | KEEP AS NON CORE | Summary: Nucleolus localization is not central to RARA function and is retained only as a non-core localization if experimentally observed. Reason: The synthesized evidence emphasizes nucleus and chromatin rather than nucleolus as the functionally meaningful location. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005829 cytosol | IDA GO_REF:0000052 | KEEP AS NON CORE | Summary: Supported or plausible cytoplasmic/perinuclear pool, but non-core relative to nuclear/chromatin transcriptional regulation. Reason: RARA can have cytoplasmic or regulated translocation pools, but direct GO-core function occurs as a nuclear/chromatin-associated transcription factor. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0042789 mRNA transcription by RNA polymerase II | IDA PMID:1310351 Retinoid X receptor interacts with nuclear receptors in reti... | MODIFY | Summary: RARA regulates RNA polymerase II transcription rather than directly carrying out mRNA synthesis. Reason: The evidence supports RARA as a transcriptional regulator, not as the polymerase machinery. Positive and negative regulation of RNA polymerase II transcription are better terms. Proposed replacements: positive regulation of transcription by RNA polymerase II negative regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0042789 mRNA transcription by RNA polymerase II | NAS PMID:9430642 The coactivator TIF2 contains three nuclear receptor-binding... | MODIFY | Summary: RARA regulates RNA polymerase II transcription rather than directly carrying out mRNA synthesis. Reason: The evidence supports RARA as a transcriptional regulator, not as the polymerase machinery. Positive and negative regulation of RNA polymerase II transcription are better terms. Proposed replacements: positive regulation of transcription by RNA polymerase II negative regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IDA PMID:9430642 The coactivator TIF2 contains three nuclear receptor-binding... | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0000785 chromatin | IDA PMID:2825025 A human retinoic acid receptor which belongs to the family o... | ACCEPT | Summary: Core chromatin-associated localization/function at retinoid-responsive regulatory regions. Reason: RARA binds RAREs in chromatin and functions as part of chromatin-associated activating or repressive transcriptional complexes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0004879 nuclear receptor activity | IDA PMID:2825025 A human retinoic acid receptor which belongs to the family o... | ACCEPT | Summary: Core molecular function: RARA is a retinoic-acid-binding nuclear receptor transcription factor. Reason: Nuclear receptor activity is the central molecular function of RARA, integrating retinoid ligand binding, RXR heterodimerization, RARE binding, and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005886 plasma membrane | IDA PMID:2825025 A human retinoic acid receptor which belongs to the family o... | MARK AS OVER ANNOTATED | Summary: This localization is over-emphasized relative to the core nuclear/chromatin RARA function. Reason: RARA is primarily nuclear/chromatin-associated. Dendrite or plasma membrane annotations may reflect specialized or indirect contexts but do not represent the core function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0048384 retinoic acid receptor signaling pathway | IDA PMID:2825025 A human retinoic acid receptor which belongs to the family o... | ACCEPT | Summary: Core biological process: RARA mediates retinoic acid receptor signaling through ligand-dependent transcriptional regulation. Reason: Retinoic acid receptor signaling is the direct pathway in which RARA transduces retinoid ligand binding into RARE-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-4341072 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0000978 RNA polymerase II cis-regulatory region sequence-specific DNA binding | IDA PMID:21131358 Induction of miR-21 by retinoic acid in estrogen receptor-po... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0000978 RNA polymerase II cis-regulatory region sequence-specific DNA binding | IMP PMID:28122350 Transcriptional suppression of microRNA-27a contributes to l... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0001217 DNA-binding transcription repressor activity | IMP PMID:28122350 Transcriptional suppression of microRNA-27a contributes to l... | ACCEPT | Summary: Supported transcription repressor activity in the unliganded/corepressor-bound RARA-RXR state. Reason: Unliganded DNA-bound RARA-RXR recruits NCoR/SMRT/HDAC corepressor machinery and can function as a transcriptional repressor. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0071300 cellular response to retinoic acid | IMP PMID:28122350 Transcriptional suppression of microRNA-27a contributes to l... | KEEP AS NON CORE | Summary: Supported retinoid/vitamin A response annotation, but broader than the direct RARA receptor signaling pathway. Reason: RARA is a direct mediator of retinoic acid signaling. General cellular response terms are valid but less precise than retinoic acid receptor signaling and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:1902894 negative regulation of miRNA transcription | IMP PMID:28122350 Transcriptional suppression of microRNA-27a contributes to l... | KEEP AS NON CORE | Summary: Supported miRNA-transcription repression in a specific cancer/differentiation model, but non-core relative to direct RARA receptor activity. Reason: The annotation reflects a particular downstream transcriptional program; the core process remains DNA-bound retinoid receptor signaling. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0001223 transcription coactivator binding | IPI PMID:17641689 MED25 is distinct from TRAP220/MED1 in cooperating with CBP ... | KEEP AS NON CORE | Summary: Supported coactivator/corepressor binding mechanism, but binding terms are secondary to the core receptor transcription-factor activity. Reason: RARA uses cofactor binding to switch between repression and activation, but the core function is ligand-dependent DNA-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IDA PMID:21131358 Induction of miR-21 by retinoic acid in estrogen receptor-po... | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:1990837 sequence-specific double-stranded DNA binding | IDA PMID:28473536 Impact of cytosine methylation on DNA binding specificities ... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0000977 RNA polymerase II transcription regulatory region sequence-specific DNA binding | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0000978 RNA polymerase II cis-regulatory region sequence-specific DNA binding | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0003682 chromatin binding | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | ACCEPT | Summary: Core chromatin-associated localization/function at retinoid-responsive regulatory regions. Reason: RARA binds RAREs in chromatin and functions as part of chromatin-associated activating or repressive transcriptional complexes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0032991 protein-containing complex | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | MODIFY | Summary: The generic protein-containing complex term should be narrowed to RNA polymerase II transcription regulator complex. Reason: The meaningful complex context is a nuclear receptor transcription regulator complex, not protein-containing complex as a generic parent. Proposed replacements: RNA polymerase II transcription regulator complex Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-uniprot.txt ComplexPortal; CPX-508; RXRalpha-RARalpha retinoic acid receptor complex. |
| GO:0032991 protein-containing complex | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | MODIFY | Summary: The generic protein-containing complex term should be narrowed to RNA polymerase II transcription regulator complex. Reason: The meaningful complex context is a nuclear receptor transcription regulator complex, not protein-containing complex as a generic parent. Proposed replacements: RNA polymerase II transcription regulator complex Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-uniprot.txt ComplexPortal; CPX-508; RXRalpha-RARalpha retinoic acid receptor complex. |
| GO:0048384 retinoic acid receptor signaling pathway | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Core biological process: RARA mediates retinoic acid receptor signaling through ligand-dependent transcriptional regulation. Reason: Retinoic acid receptor signaling is the direct pathway in which RARA transduces retinoid ligand binding into RARE-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0000785 chromatin | IDA PMID:21131358 Induction of miR-21 by retinoic acid in estrogen receptor-po... | ACCEPT | Summary: Core chromatin-associated localization/function at retinoid-responsive regulatory regions. Reason: RARA binds RAREs in chromatin and functions as part of chromatin-associated activating or repressive transcriptional complexes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0004879 nuclear receptor activity | IDA PMID:21131358 Induction of miR-21 by retinoic acid in estrogen receptor-po... | ACCEPT | Summary: Core molecular function: RARA is a retinoic-acid-binding nuclear receptor transcription factor. Reason: Nuclear receptor activity is the central molecular function of RARA, integrating retinoid ligand binding, RXR heterodimerization, RARE binding, and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0000785 chromatin | ISA GO_REF:0000113 | ACCEPT | Summary: Core chromatin-associated localization/function at retinoid-responsive regulatory regions. Reason: RARA binds RAREs in chromatin and functions as part of chromatin-associated activating or repressive transcriptional complexes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0000981 DNA-binding transcription factor activity, RNA polymerase II-specific | ISA GO_REF:0000113 | ACCEPT | Summary: Core RNA polymerase II-specific DNA-binding transcription factor activity. Reason: This term captures RARA as a sequence-specific nuclear receptor transcription factor acting on RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0051393 alpha-actinin binding | IPI PMID:22351778 Familial focal segmental glomerulosclerosis (FSGS)-linked α-... | KEEP AS NON CORE | Summary: Supported specific regulatory protein interaction, but non-core relative to RARA nuclear receptor activity. Reason: These kinase or cytoskeletal interactions can modulate RARA transcriptional activity in particular contexts, but they should not define the core function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:16417524 Akt, which is constitutively activated in NSCLC cells, phosphorylates RARalpha and inhibits its transactivation. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-5334854 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-5634103 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-9009817 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-376419 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-382096 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-9617067 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0005654 nucleoplasm | TAS Reactome:R-HSA-9860125 | KEEP AS NON CORE | Summary: Supported nuclear subcompartment localization, but nucleoplasm is less informative than nucleus/chromatin for the core function. Reason: Nucleoplasm localization is compatible with RARA biology, but the curatable core location is nuclear/chromatin-associated transcription factor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0043422 protein kinase B binding | IPI PMID:16417524 Akt phosphorylates and suppresses the transactivation of ret... | KEEP AS NON CORE | Summary: Supported specific regulatory protein interaction, but non-core relative to RARA nuclear receptor activity. Reason: These kinase or cytoskeletal interactions can modulate RARA transcriptional activity in particular contexts, but they should not define the core function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:16417524 Akt, which is constitutively activated in NSCLC cells, phosphorylates RARalpha and inhibits its transactivation. |
| GO:0051018 protein kinase A binding | IDA PMID:20215566 Activity of retinoic acid receptor-alpha is directly regulat... | KEEP AS NON CORE | Summary: Supported specific regulatory protein interaction, but non-core relative to RARA nuclear receptor activity. Reason: These kinase or cytoskeletal interactions can modulate RARA transcriptional activity in particular contexts, but they should not define the core function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:16417524 Akt, which is constitutively activated in NSCLC cells, phosphorylates RARalpha and inhibits its transactivation. |
| GO:0000785 chromatin | IDA PMID:17363140 The core component of the mammalian SWI/SNF complex SMARCD3/... | ACCEPT | Summary: Core chromatin-associated localization/function at retinoid-responsive regulatory regions. Reason: RARA binds RAREs in chromatin and functions as part of chromatin-associated activating or repressive transcriptional complexes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0005515 protein binding | IPI PMID:17363140 The core component of the mammalian SWI/SNF complex SMARCD3/... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0019899 enzyme binding | IPI PMID:12039952 Identification of protein arginine methyltransferase 2 as a ... | MARK AS OVER ANNOTATED | Summary: Generic binding annotations are over-annotations relative to the informative RARA receptor/cofactor mechanisms. Reason: The evidence supports specific nuclear receptor, DNA-binding, and cofactor-complex mechanisms; generic enzyme/domain binding terms obscure the main function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0044323 retinoic acid-responsive element binding | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0019899 enzyme binding | IPI PMID:9628876 Two distinct nuclear receptor interaction domains in NSD1, a... | MARK AS OVER ANNOTATED | Summary: Generic binding annotations are over-annotations relative to the informative RARA receptor/cofactor mechanisms. Reason: The evidence supports specific nuclear receptor, DNA-binding, and cofactor-complex mechanisms; generic enzyme/domain binding terms obscure the main function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0003700 DNA-binding transcription factor activity | IDA PMID:18922886 Retinoic acid-dependent activation of the polycystic kidney ... | MODIFY | Summary: The generic DNA-binding transcription factor term should be narrowed to RARA nuclear receptor/RNA polymerase II transcription factor activity. Reason: RARA is a ligand-activated nuclear receptor and RNA polymerase II transcription factor. The replacement terms capture the specific transcription-factor class and regulatory target. Proposed replacements: nuclear receptor activity DNA-binding transcription factor activity, RNA polymerase II-specific Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005515 protein binding | IPI PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005634 nucleus | IDA PMID:18845237 Retinoic acid regulates the human methionine sulfoxide reduc... | ACCEPT | Summary: Core nuclear localization for the RARA transcription factor. Reason: RARA is primarily a nuclear transcription factor whose direct function occurs at nuclear response elements. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0005634 nucleus | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Core nuclear localization for the RARA transcription factor. Reason: RARA is primarily a nuclear transcription factor whose direct function occurs at nuclear response elements. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0030853 negative regulation of granulocyte differentiation | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | MARK AS OVER ANNOTATED | Summary: Negative regulation of granulocyte differentiation is likely fusion- or disease-context dependent and should not be treated as core wild-type RARA function. Reason: APL and PML::RARA evidence is mechanistically informative, but fusion-specific repression and differentiation blockade should not be transferred wholesale to wild-type RARA. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md PML::RARA and other RARA fusions preserve some RARα biochemical properties (DNA binding, retinoid responsiveness) but add fusion-specific multimerization, chromatin targeting, condensate formation, and altered transcriptional programs; these findings are mechanistically informative but should not be transferred wholesale to wild-type RARA GO annotations. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0031490 chromatin DNA binding | IDA PMID:19917671 Loss of CAK phosphorylation of RAR{alpha} mediates transcrip... | ACCEPT | Summary: Core sequence-specific DNA/RARE binding function of the RARA-RXR transcription factor complex. Reason: RARA binds retinoic acid response elements, primarily as an RXR heterodimer, and this DNA binding is central to its transcriptional regulatory function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα binds RAREs primarily as an RXR heterodimer. Structural and biochemical evidence includes a **1.7 Å** crystal structure of RXR and RAR DNA-binding domains (DBDs) assembled on a **DR1** element that shows **RAR bound to the upstream (5′) half-site and RXR bound downstream (3′)**, i.e., **reverse polarity** compared with other RXR heterodimers. |
| GO:0045893 positive regulation of DNA-templated transcription | IDA PMID:18845237 Retinoic acid regulates the human methionine sulfoxide reduc... | MODIFY | Summary: The broad positive regulation of DNA-templated transcription term should be narrowed to RNA polymerase II transcription regulation. Reason: RARA acts as an RNA polymerase II transcription regulator at RARE/chromatin loci; GO:0045944 is the more specific BP term already supported by the evidence. Proposed replacements: positive regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0005515 protein binding | IPI PMID:19850744 Small ubiquitin-like modifier-2 modification of retinoic aci... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005737 cytoplasm | IDA PMID:19850744 Small ubiquitin-like modifier-2 modification of retinoic aci... | KEEP AS NON CORE | Summary: Supported or plausible cytoplasmic/perinuclear pool, but non-core relative to nuclear/chromatin transcriptional regulation. Reason: RARA can have cytoplasmic or regulated translocation pools, but direct GO-core function occurs as a nuclear/chromatin-associated transcription factor. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. |
| GO:0006468 protein phosphorylation | IMP PMID:16456540 P38MAPK-dependent phosphorylation and degradation of SRC-3/A... | REMOVE | Summary: RARA is a phosphorylation substrate/regulatory target, not a protein kinase. Reason: The relevant evidence shows kinases phosphorylating RARA or RARA-associated coactivators to modulate transcription. It does not support RARA enabling protein phosphorylation. Supporting Evidence: PMID:16417524 Akt, which is constitutively activated in NSCLC cells, phosphorylates RARalpha and inhibits its transactivation. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0043277 apoptotic cell clearance | IMP PMID:19628791 Induction of transglutaminase 2 by a liver X receptor/retino... | KEEP AS NON CORE | Summary: Supported macrophage apoptotic-cell clearance pathway output, but non-core relative to RARA transcriptional regulation. Reason: This phenotype is mediated through RARalpha-dependent induction of TGM2 in macrophages and is a downstream cellular outcome of nuclear receptor signaling. Supporting Evidence: PMID:19628791 CONCLUSIONS: These results indicate an important role for LXRs in the control of phagocytosis through an RARalpha-TGM2-dependent mechanism. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0045893 positive regulation of DNA-templated transcription | IDA PMID:19850744 Small ubiquitin-like modifier-2 modification of retinoic aci... | MODIFY | Summary: The broad positive regulation of DNA-templated transcription term should be narrowed to RNA polymerase II transcription regulation. Reason: RARA acts as an RNA polymerase II transcription regulator at RARE/chromatin loci; GO:0045944 is the more specific BP term already supported by the evidence. Proposed replacements: positive regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IDA PMID:19850744 Small ubiquitin-like modifier-2 modification of retinoic aci... | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0045893 positive regulation of DNA-templated transcription | IMP PMID:19628791 Induction of transglutaminase 2 by a liver X receptor/retino... | MODIFY | Summary: The broad positive regulation of DNA-templated transcription term should be narrowed to RNA polymerase II transcription regulation. Reason: RARA acts as an RNA polymerase II transcription regulator at RARE/chromatin loci; GO:0045944 is the more specific BP term already supported by the evidence. Proposed replacements: positive regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0005102 signaling receptor binding | IDA PMID:19628791 Induction of transglutaminase 2 by a liver X receptor/retino... | UNDECIDED | Summary: Signaling receptor binding (IDA) from a study of a liver X receptor/retinoic acid receptor pathway inducing transglutaminase 2 (PMID:19628791); only the abstract is available. Reason: The row is a direct-assay annotation from a study of transglutaminase 2 induction by a liver X receptor and retinoic acid receptor signalling pathway, of which only the abstract is available, so the binding experiment on which the curator relied cannot be examined. Retinoic acid receptors act together with other nuclear receptors, which are signalling receptors in GO, so the annotation cannot be dismissed as belonging to another gene product on the strength of the abstract. The row is left undecided rather than removed. Supporting Evidence: PMID:19628791 CONCLUSIONS: These results indicate an important role for LXRs in the control of phagocytosis through an RARalpha-TGM2-dependent mechanism. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0019904 protein domain specific binding | IPI PMID:20413580 Human ADA3 regulates RARalpha transcriptional activity throu... | MARK AS OVER ANNOTATED | Summary: Generic binding annotations are over-annotations relative to the informative RARA receptor/cofactor mechanisms. Reason: The evidence supports specific nuclear receptor, DNA-binding, and cofactor-complex mechanisms; generic enzyme/domain binding terms obscure the main function. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0003700 DNA-binding transcription factor activity | IDA PMID:20413580 Human ADA3 regulates RARalpha transcriptional activity throu... | MODIFY | Summary: The generic DNA-binding transcription factor term should be narrowed to RARA nuclear receptor/RNA polymerase II transcription factor activity. Reason: RARA is a ligand-activated nuclear receptor and RNA polymerase II transcription factor. The replacement terms capture the specific transcription-factor class and regulatory target. Proposed replacements: nuclear receptor activity DNA-binding transcription factor activity, RNA polymerase II-specific Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0005515 protein binding | IPI PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | MARK AS OVER ANNOTATED | Summary: Protein binding is an uninformative over-annotation for RARA. Reason: RARA has many documented interactions with RXR, coactivators, corepressors, kinases, and disease-associated partners, but GO:0005515 does not describe the functional mechanism. More informative terms cover nuclear receptor activity, RARE binding, transcription regulator complexes, and specific cofactor binding. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). |
| GO:0005634 nucleus | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | ACCEPT | Summary: Core nuclear localization for the RARA transcription factor. Reason: RARA is primarily a nuclear transcription factor whose direct function occurs at nuclear response elements. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα is primarily described as **nuclear** and **chromatin-associated** through binding to promoter/enhancer RAREs; nucleosomes do not necessarily preclude binding. file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. |
| GO:0008284 positive regulation of cell population proliferation | IMP PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | KEEP AS NON CORE | Summary: Supported cell proliferation, apoptosis, cell-cycle, or binding effects are context-specific downstream outputs of RARA signaling. Reason: These annotations can be retained as non-core where experiments support cellular phenotypes, but they are downstream of direct retinoid receptor transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. |
| GO:0045787 positive regulation of cell cycle | IMP PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | KEEP AS NON CORE | Summary: Supported cell proliferation, apoptosis, cell-cycle, or binding effects are context-specific downstream outputs of RARA signaling. Reason: These annotations can be retained as non-core where experiments support cellular phenotypes, but they are downstream of direct retinoid receptor transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. |
| GO:0045892 negative regulation of DNA-templated transcription | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | MODIFY | Summary: The broad negative regulation of DNA-templated transcription term should be narrowed to RNA polymerase II transcription repression. Reason: Unliganded RARA-RXR represses RNA polymerase II transcription via NCoR/SMRT/HDAC corepressor complexes. Proposed replacements: negative regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md RARα/RXR complexes bound to RAREs recruit **NCoR/SMRT** corepressors linked to HDAC activity, supporting a mechanistic basis for **ligand-modulated transcriptional repression**. |
| GO:0045893 positive regulation of DNA-templated transcription | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | MODIFY | Summary: The broad positive regulation of DNA-templated transcription term should be narrowed to RNA polymerase II transcription regulation. Reason: RARA acts as an RNA polymerase II transcription regulator at RARE/chromatin loci; GO:0045944 is the more specific BP term already supported by the evidence. Proposed replacements: positive regulation of transcription by RNA polymerase II Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0045944 positive regulation of transcription by RNA polymerase II | IMP PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | ACCEPT | Summary: Supported core activating mode of RARA-mediated RNA polymerase II transcription regulation. Reason: Ligand-bound RARA-RXR recruits coactivators and activates retinoid-responsive RNA polymerase II target genes. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md Ligand binding can drive coactivator recruitment to RARα complexes. file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0051099 positive regulation of binding | IMP PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | KEEP AS NON CORE | Summary: Supported cell proliferation, apoptosis, cell-cycle, or binding effects are context-specific downstream outputs of RARA signaling. Reason: These annotations can be retained as non-core where experiments support cellular phenotypes, but they are downstream of direct retinoid receptor transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. |
| GO:0071391 cellular response to estrogen stimulus | IDA PMID:20080953 Cooperative interaction between retinoic acid receptor-alpha... | KEEP AS NON CORE | Summary: Supported estrogen cross-talk context, but non-core relative to canonical retinoic acid receptor function. Reason: RARA can cooperate with estrogen receptor programs in breast cancer cells, but this is a context-specific regulatory interaction rather than the core retinoid receptor function. Supporting Evidence: PMID:20080953 We now show that RAR alpha is required for efficient estrogen receptor-alpha (ER)-mediated transcription and cell proliferation. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0001972 retinoic acid binding | IDA PMID:2825025 A human retinoic acid receptor which belongs to the family o... | ACCEPT | Summary: Core ligand-binding function for all-trans retinoic acid and related retinoids. Reason: Retinoic acid binding drives the ligand-dependent corepressor-to-coactivator switch of RARA nuclear receptor activity. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα supports a canonical nuclear-receptor **cofactor “switch” mechanism**: in the **absence of ligand**, RARα/RXR bound on DNA recruits **corepressors** such as **NCoR/SMRT** that are associated with histone deacetylase (HDAC) activity and transcriptional repression; upon **retinoid agonist binding**, ligand-induced conformational changes (notably involving AF-2/helix 12 in the ligand-binding domain) destabilize corepressor binding and favor recruitment of **coactivators** (e.g., p160/SRC family, CBP/p300, Mediator/DRIP/TRAP components), enabling transcriptional activation of retinoid-responsive genes. |
| GO:0032689 negative regulation of type II interferon production | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0032720 negative regulation of tumor necrosis factor production | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0032736 positive regulation of interleukin-13 production | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0032753 positive regulation of interleukin-4 production | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0032754 positive regulation of interleukin-5 production | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0045630 positive regulation of T-helper 2 cell differentiation | IDA PMID:18416830 The Retinoic Acid Receptor-alpha mediates human T-cell activ... | KEEP AS NON CORE | Summary: Supported human T-cell cytokine/Th2 differentiation effects, but non-core relative to direct RARA receptor transcriptional regulation. Reason: RAR-alpha engagement affects activated human T-cell cytokine programs, but these immune outputs are downstream and cell-context-specific. Supporting Evidence: PMID:18416830 CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production. file:human/RARA/RARA-deep-research-falcon.md many transcriptomic or phenotypic outcomes in RA-treated cells reflect indirect downstream programs (e.g., differentiation cascades) rather than direct RARα DNA binding; IDA evidence for MF/CC (structure, EMSA, cofactor recruitment assays) is stronger than broad BP assertions unless direct targets are shown. |
| GO:0032526 response to retinoic acid | IMP PMID:17538076 Regulation of 17-beta hydroxysteroid dehydrogenase type 2 in... | KEEP AS NON CORE | Summary: Supported retinoid/vitamin A response annotation, but broader than the direct RARA receptor signaling pathway. Reason: RARA is a direct mediator of retinoic acid signaling. General cellular response terms are valid but less precise than retinoic acid receptor signaling and transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
| GO:0048384 retinoic acid receptor signaling pathway | IMP PMID:17538076 Regulation of 17-beta hydroxysteroid dehydrogenase type 2 in... | ACCEPT | Summary: Core biological process: RARA mediates retinoic acid receptor signaling through ligand-dependent transcriptional regulation. Reason: Retinoic acid receptor signaling is the direct pathway in which RARA transduces retinoid ligand binding into RARE-bound transcriptional regulation. Supporting Evidence: file:human/RARA/RARA-deep-research-falcon.md **RARA encodes RARα**, a ligand-activated nuclear receptor that functions as a **sequence-specific DNA-binding transcription factor**. RARα typically acts as a heterodimer with retinoid X receptor (RXR) on **retinoic acid response elements (RAREs)**, classically composed of **direct repeats of the hexamer PuG(G/T)TCA** spaced by 1–5 bp (e.g., DR5, DR2, DR1). file:human/RARA/RARA-deep-research-falcon.md RARα is a core effector of retinoic acid signaling, transducing ligand binding into activation or repression of RA-responsive transcriptional programs. |
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Download this section (compressed HTML)Q: Which RARA developmental and immune-response GO annotations are supported by direct RARalpha target-gene evidence rather than indirect retinoic-acid differentiation cascades?
Q: Should fusion-specific PML::RARA chromatin and differentiation-block phenotypes be represented separately from wild-type RARA annotations to prevent over-transfer to the normal receptor?
Experiment: Perform RARA perturbation with rescue by DNA-binding- or ligand-binding-defective mutants in primary human retinoid-responsive cells, followed by RARA ChIP-seq and nascent RNA profiling to distinguish direct transcriptional targets from downstream differentiation effects.
Type: genetic rescue plus ChIP-seq/nascent transcriptomics
Experiment: Compare wild-type RARA and major RARA fusion proteins at matched RARE loci for corepressor/coactivator occupancy, ligand responsiveness, and transcriptional output to separate normal receptor biology from fusion-specific GO claims.
Type: chromatin occupancy and transcriptional reporter assay
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