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Details on Person UniProt:Q92750 TAF4B

Class:IdReferenceGeneProduct:65560
_chainChangeLogchain:1-862 added on Sat February 7 2015
_displayNameUniProt:Q92750 TAF4B
_timestamp2024-11-03 20:07:58
chainchain:1-862
checksumE380D5CD2445AC11
commentFUNCTION Cell type-specific subunit of the general transcription factor TFIID that may function as a gene-selective coactivator in certain cells. TFIID is a multimeric protein complex that plays a central role in mediating promoter responses to various activators and repressors. TAF4B is a transcriptional coactivator of the p65/RELA NF-kappa-B subunit. Involved in the activation of a subset of antiapoptotic genes including TNFAIP3. May be involved in regulating folliculogenesis. Through interaction with OCBA/POU2AF1, acts as a coactivator of B-cell-specific transcription. Plays a role in spermiogenesis and oogenesis.SUBUNIT TFIID is composed of TATA binding protein (TBP) and a number of TBP-associated factors (TAFs) (PubMed:15601843). Heterodimerizes with TAF12/TFII20 via the C-terminal H2A-like histone-fold domain (PubMed:15601843). This heterodimer forms a histone-like octamer with the TAF6/TAFII70-TAF9/TAFII31 heterodimer (PubMed:15601843). Interacts with P65/RELA homodimers and P65/RELA-REL heterodimers (PubMed:10849440). Interaction with POU2AF1, via its C-terminal activation domain, is required for octamer-dependent transcription (PubMed:10828057). Interacts with ZNF628 (By similarity).SUBCELLULAR LOCATION Export into the cytoplasm is mediated by a CRM1-independent nuclear export pathway and not by phosphorylation.ALTERNATIVE PRODUCTS Preferentially expressed in ovarian granulosa cells (at protein level). Highly expressed in B-cells.PTM Under stimulation by forskolin, Isoform 1 is phosphorylated by protein kinase A (PKA).DISEASE The disease is caused by variants affecting the gene represented in this entry.MISCELLANEOUS May be due to exon inclusion. Unphosphorylated form.SIMILARITY Belongs to the TAF4 family.
descriptionrecommendedName: Transcription initiation factor TFIID subunit 4B alternativeName: Transcription initiation factor TFIID 105 kDa subunit shortName: TAF(II)105 shortName: TAFII-105 shortName: TAFII105
geneNameTAF4B
TAF2C2
TAFII105
identifierQ92750
isSequenceChangedFALSE
keywordAlternative splicing
Coiled coil
Cytoplasm
Differentiation
Direct protein sequencing
DNA-binding
Nucleus
Oogenesis
Phosphoprotein
Proteomics identification
Reference proteome
Spermatogenesis
Transcription
Transcription regulation
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
nameTAF4B
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8995730] ENSEMBL:ENSG00000141384 TAF4B [Homo sapiens]
secondaryIdentifierTAF4B_HUMAN
Q29YA4
Q29YA5
sequenceLength862
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:250402] UniProt:Q92750-2 TAF4B [Homo sapiens]
[ReferenceIsoform:412482] UniProt:Q92750-1 TAF4B [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:65559] TAF4B [nucleoplasm] [Homo sapiens]
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