BICRA/GLTSCR1 is a defining, noncatalytic GBAF/ncBAF subunit. It is mutually exclusive with BICRAL, contributes to complex composition, and associates with BRD4 and chromatin. The central synthesis is GBAF-dependent chromatin remodeling and transcription regulation. The ATPase activity measured in a BICRA immunoprecipitate belongs to an assembly containing SMARCA2/SMARCA4; it is not evidence that isolated BICRA hydrolyses ATP. Consequently the core uses contributes_to_molecular_function, with GBAF under in_complex and nucleoplasm under locations.
PMID:29374058(https://pubmed.ncbi.nlm.nih.gov/29374058/) provides the principal biochemical support. The existing normal cache contains fuller text than the recovered abstract-only alternative and was preserved. Its cached Results and Discussion show stable complex association, gradient separation from canonical BAF and PBAF, mutually exclusive BICRA/BICRAL occupancy, effects on complex composition, chromatin association and BRD4 co-immunoprecipitation. BICRA knockout impairs PC3 proliferation and colony formation but does not produce the same viability effect in several other cell lines. In LNCaP cells it increases MYC expression in a BRD4-sensitive context. Transcriptional effects therefore should not be described as uniformly activating.
PMID:21555454(https://pubmed.ncbi.nlm.nih.gov/21555454/) supports association between tagged GLTSCR1 and endogenous BRD4 in human 293T cells and positive regulation of selected BRD4 target transcripts in C33A cells. Selected indexed official PMC Results were read beyond the normal abstract. The viral reporter alone is complicated by a small reduction in E2 protein, but PIM2, CCND1 and DCPS transcript results provide separate support. NSD3/JMJD6 promoter ChIP and NSD3-associated methylation are not BICRA assays. Nuclear-targeting details concern BRD4 constructs and are not proof that every endogenous BICRA isoform was localized.
PMID:30510198(https://pubmed.ncbi.nlm.nih.gov/30510198/) establishes BICRA/BICRAL within GBAF and a role for the complex in naive mouse ESC identity. The principal functional interventions affect BRD9. Selected Discussion notes that Gltscr1 deletion alone did not impair pluripotency and proposes paralog compensation. The two developmental annotations are retained as non-core, explicitly qualified complex-associated roles; they do not claim a unique BICRA requirement in human stem cells. This is neither a wrong-gene citation nor evidence that compensated BICRA cannot participate.
The NCK1/CRK rows from PMID:17474147(https://pubmed.ncbi.nlm.nih.gov/17474147/) and CRK row from PMID:35044719(https://pubmed.ncbi.nlm.nih.gov/35044719/) retain their exact source partners. Complete abstracts and selected bait-table/Results material were read, but the exact BICRA supplemental pair entries were not inspected. These three rows are UNDECIDED, not removed because the gene is missing from an abstract or main-text search. The two independently supported BRD4 interaction rows are KEEP_AS_NON_CORE under the user's action definitions; generic wording alone is not evidence that an interaction is false.
The official Reactome9932443 and Reactome9933236 pages explicitly place the assembly reactions in human nucleoplasm. Their complete normal summaries and selected official identity/compartment/participant sections were read. The location reasons use that compartment evidence and do not substitute an assembly assertion for a localization assertion.
All 22 existing source objects and both alternative products (Q9NZM4-1 and Q9NZM4-2, VSP_035776) remain exact. No new annotation is added. The three GO:0016514 complex annotations are refined to the empirically identified GBAF complex GO:0140288. Official ontology records place these terms as siblings under the SWI/SNF superfamily, so no child-term relationship is asserted. Original PAINT and Ensembl supporting entities remain untouched. The PTN000399987 tree was not independently reconstructed; target-self evidence is expected and no circularity or node-placement error is alleged.
GO:0140537 specifies activation of a transcription regulator away from the promoter. GO:0003713 addresses coactivation at a genomic locus. BRD4 interaction and positive transcript changes alone do not resolve this distinction, so the IMP activator row is UNDECIDED and no replacement is invented. The core's GO:0140658 is explicitly a contribution to the complex activity, not a new standalone BICRA catalytic assertion. No claim is made that all molecular details remain unknown in the current literature.
The normal Falcon startup with Perplexity-lite fallback failed dependency resolution before either provider ran (actual11dca8). No provider output was produced or authored, and no retry was made. This document contains manual research. Complete five source abstracts and two Reactome summaries were read; the fuller canonical29374058 cached Results/Discussion were read, while30510198 and35044719 were inspected in selected sections only. No complete original-image, supplementary-data or entire-paper audit is claimed. Unrelated returned web search results were not adopted as evidence.
The separate source-import process preserves four differing existing PMID caches, one equal Reactome and two absent family destinations. PMID21555454 remains abstract-only even though selected external Results were accessible. The source preread receipt and official evidence are retained in TMP. Historical preread questions are superseded by the explicit decisions in this proposal, except the four UNDECIDED rows listed above.
Verbatim quotation use is confined to one short PMID21555454 anchor in the positive-transcription annotation and two PMID29374058 anchors in the core. The separate ledger counts all occurrences and stays below 25 words per source; no additional verbatim passages are quoted in these notes. Validation and independent scientific review remain pending before any canonical curation is applied.
The two missing normal caches were imported and postverified separately (9bc3ca/e3b84d). Read-only reassessment984b67 confirmed exact staged/canonical equality for PMID21555454 and Reactome9932443 and all quotations against canonical publication text; no scientific change was needed. This supersedes the preceding pending-validation statement. Full normal schema, reference, GOA, best-practice and ontology validation (--verbose --terms, start00eafc, terminalbb244e) passed with three advisory warnings. Two concern the supported generic BRD4-binding rows retained as non-core under the user's action definitions. The third asks for propagation-review metadata on the IBA complex refinement; no PAINT tree or source-node reconstruction was performed, so the review supplies the biological GBAF rationale without inventing such an analysis. The separate markdown-reference command473a1d found no pathway markdown files and therefore did not perform a pathway citation check. The normal validator also emitted the existing pkg_resources deprecation notice. Final independent scientific approval is still required before canonical application.
ROOT independently assessed all 22 annotation decisions and the core function, including the official GO definitions and the final complex-ATPase evidence anchor, and approved the proposal (a43d39). The exact reviewed YAML was applied (97e969) and passed focused canonical validation (cecdd0), rendering (06d968) and history validation (6be0f0). Three advisory warnings remain: two supported generic BRD4-binding rows retained as non-core under the supplied action definitions, and one IBA complex refinement without an unperformed PAINT-tree assessment. Four source assertions remain undecided. The rendered page embeds the exact reviewed YAML. No repository-wide validation, whole-paper or supplementary-pair audit, or scientific-provider report is claimed. Raw source and reference caches remain unchanged.
BICRA is a noncatalytic GBAF/ncBAF subunit with two connected roles: it helps specify the remodeling complex, and it connects BRD4 with that machinery. The 2011 BRD4 study reports human tagged-GLTSCR1/endogenous-BRD4 co-immunoprecipitation and an interaction network linking BRD4 to chromatin-remodeling components. The 2018 GBAF study establishes stable complex membership, composition and BRD4 association. The normal UniProt subunit annotation integrates these as a BRD4-to-GBAF bridge. This combined evidence supports GO:0030674 protein-macromolecule adaptor activity for the two BRD4 rows and a corresponding core function. It does not establish purified binary contacts throughout the assembly. The distinct complex-remodeling core retains contributes_to_molecular_function: BICRA is not the ATPase.
The UniProt INTERACTION section positively corroborates BICRA partners NCK1 (NbExp 3) and CRK (NbExp 2). The historical reasons were incomplete because they omitted that independent support. Those curated pair records are now cited explicitly. The remaining uncertainty concerns the exact BICRA peptide and study-specific evidence in the original 2007/2022 supplementary records; the counts alone do not assign individual experiments to each source row, and direct IntAct access failed. These three source assertions remain UNDECIDED under the supplied access-limitation rule, with no claim that the interactions are absent or wrong. Nor does a contact with a signaling adaptor establish that BICRA itself performs an adaptor function in that signaling pathway.
GO:0140537 currently states: “This activity does not occur at the promoter.” The positive cellular-transcript result remains accepted, but it does not locate BICRA-mediated activation relative to the promoter. NSD3/JMJD6 ChIP cannot supply that missing BICRA-specific distinction. The molecular-function row remains UNDECIDED; GO:0003713 is not substituted without evidence of the corresponding locus-associated mechanism. This is a specific mechanistic uncertainty, not a rejection of the paper's positive transcription result.
Barish et al., PMID33232675 extends the biological picture beyond cultured-cell transcription. The human cohort has BICRA variants associated with neurodevelopmental abnormalities. Zebrafish bicra loss produces craniofacial phenotypes, while fly experiments identify a corresponding ncBAF assembly and context-dependent chromatin effects. These findings support developmental relevance in the description and reference findings. They do not independently establish BICRA-specific maintenance of human stem cells, or negate BICRAL compensation in the earlier mouse ESC work. Accordingly the two existing stem-cell/differentiation assertions remain non-core with their original species and complex-level limits; no new developmental process annotation is manufactured from necessity evidence.
GBAF is described biologically as a member of the mammalian SWI/SNF complex family. The reviewed GO identifiers distinguish GO:0140288 from GO:0016514 as sibling assemblies under their superfamily; the GBAF refinements therefore preserve the experimental complex identity without claiming a strict ontology child relationship. This biological use of SWI/SNF does not assert membership in every canonical BAF or PBAF assembly.
This appended interpretation supersedes the earlier KEEP_AS_NON_CORE decisions for the two BRD4-binding rows and the earlier omission of UniProt corroboration for NCK1/CRK. The previous journal, validation and publication entries remain unchanged historical records. All 22 source annotation objects and both alternative products remain exact. No new annotation row is added. The only action changes are the two evidence-backed BRD4 refinements; redundant reviewer reference lists already represented by supported_by are removed.
The current follow-up read complete cached interaction abstracts, selected 2011 indexed primary Results, the relevant canonical 2018 GBAF Results, UniProt SUBUNIT/INTERACTION/disease sections, current official ontology definitions and selected indexed 2020 developmental-paper sections. It does not claim complete clinical, supplementary or original-image reinspection. Direct PMC and IntAct access limitations are recorded separately. The one normal fetch for PMID33232675 failed DNS; that canonical cache and final reference validation remain pending. No provider retry or provider-named file was created. Existing PMID21555454 and PMID29374058 quotes remain unchanged; the only new paper-independent anchors are eight UniProt words in the adaptor core and eight words from the official GO usage comment here.
The exact normal PMID:33232675 cache is now present following the separately verified Source99 import and postverification. Its complete abstract confirms the title, human variant cohort, zebrafish developmental phenotype and fly complex/chromatin context already considered above. The normal cache is abstract-only despite its PMCID; the selected indexed primary sections previously read remain separate evidence, not a claim that the normal cache contains the full article. No publication quotation was added.
This supersedes the earlier pending-cache statement. The developmental citation supports the biological description and reference finding without creating a new developmental process annotation or supplying a BICRA-specific human stem-cell mechanism. The two BRD4 refinements still rest on the inspected human interaction-network and GBAF evidence plus the normal UniProt bridge annotation; they do not claim purified binary contacts throughout the assembly. All 22 original annotation source objects and two alternative_products remain exact, with ten ACCEPT, five MODIFY, three KEEP_AS_NON_CORE and four UNDECIDED decisions, two core functions and zero NEW rows. Canonical review, notes and raw source files remain untouched by this TMP integration. Focused validation of these final proposed bytes is recorded separately before the independent scientific review.
ROOT independently approved all 22 annotation decisions and both core functions (bc87a7), then applied the exact proposal (dcd1e5). Focused canonical validation passed (c0e744), rendering passed (308d81), and the new history record validated (937ffc). The one advisory concerns an IBA refinement without an unperformed phylogenetic assessment. An initial validation invocation used an unsupported output flag and stopped before validation; its raw result is preserved, and the corrected invocation completed. Raw sources, existing reference caches and prior history remain unchanged. No whole-paper, supplementary-pair or PAINT-tree review is claimed.
The NCK1/CRK interactions are positively corroborated by UniProt. The unresolved question is which molecular-function refinement the BICRA peptide, partner domain and assay context can support. The original study-specific peptide and supplementary records remain uninspected; aggregate interaction counts cannot substitute for them. The three rows remain UNDECIDED for this assessment. The previous sentence about generic binding and REMOVE is superseded by this narrower explanation. No negative finding about the physical interactions is asserted.
The 2011 BRD4 study, PMID:21555454 was consulted through indexed full-text Results, including the human 293T co-immunoprecipitation and C33A transcript experiments. Those assay details are not derived from the abstract-only cached record. The reviewed UniProt subunit annotation independently supports the BRD4-to-GBAF bridge. Existing verbatim anchors remain unchanged.
The Barish study, PMID:33232675 establishes human neurodevelopmental and model-organism relevance. It does not independently test the mouse stem-cell mechanism in the two existing developmental annotations. Those annotations retain their qualified complex-level, species-specific interpretation and the documented possibility of BICRAL compensation. Their non-core classification does not imply that single-gene deletion establishes an indispensable stem-cell function.
The remodeling core records BICRA's contribution to an ATPase-containing complex. No independently demonstrated subunit-specific molecular function is added to that core merely to fill an optional field. The separate BRD4-bridging core already records the supported protein–macromolecule adaptor activity; duplicating it would conflate the two evidential roles.
This clarification preserves all 22 source assertions, both alternative products, both core functions, all actions and all quotation text. Reference notes now identify the publication or database evidence directly. Earlier journal and history entries remain historical records.
The changed evidence explanations passed independent scientific review (c1c2c6), focused validation, rendering and history validation. All 22 source assertions, annotation actions, two alternative products, both core functions and existing quotations remain unchanged. The single validation advisory concerns existing IBA propagation metadata; no new phylogenetic assessment is asserted. Raw sources, publication caches and earlier history remain unchanged.