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... | REMOVE | Summary: PMID:19628791 supports an LXR/RARA-dependent transcriptional pathway that induces TGM2-dependent phagocytosis, not RARA signaling receptor binding. Reason: The molecular function is assigned to the wrong gene product. TGM2 is the factor required for macrophage phagocytosis, while RARA acts upstream as a nuclear receptor transcription factor. This source evidence does not show RARA directly binding a signaling receptor. 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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