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Details on Person UniProt:Q53T94 TAF1B

Class:IdReferenceGeneProduct:212191
_chainChangeLogchain:1-588 added on Fri February 6 2015
_displayNameUniProt:Q53T94 TAF1B
_timestamp2024-11-03 20:21:47
chainchain:1-588
checksumCE45DE622E28FD6E
commentFUNCTION Component of RNA polymerase I core factor complex that acts as a GTF2B/TFIIB-like factor and plays a key role in multiple steps during transcription initiation such as pre-initiation complex (PIC) assembly and postpolymerase recruitment events in polymerase I (Pol I) transcription. Binds rDNA promoters and plays a role in Pol I recruitment as a component of the SL1/TIF-IB complex and, possibly, directly through its interaction with RRN3.SUBUNIT Interacts with FLNA (via N-terminus) (By similarity). Component of the transcription factor SL1/TIF-IB complex, composed of TBP and at least TAF1A, TAF1B, TAF1C and TAF1D. In the complex interacts directly with TBP, TAF1A and TAF1C. Interaction of the SL1/TIF-IB subunits with TBP excludes interaction of TBP with the transcription factor IID (TFIID) subunits. Interacts with TBP and RRN3. Part of Pol I pre-initiation complex (PIC), in which Pol I core assembles with RRN3 and promoter-bound UTBF and SL1/TIF-IB complex.INTERACTION Although it shares weak sequence similarity with GTF2B/TFIIB, displays a similar subdomain organization as GTF2B/TFIIB, with a N-terminal zinc finger, a connecting region (composed of B-reader and B-linker regions), followed by 2 cyclin folds. The RRN7-type zinc finger plays an essential postrecruitment role in Pol I transcription at a step preceding synthesis of the first 40 nucleotides (PubMed:21921198, PubMed:21921199).SIMILARITY Belongs to the RRN7/TAF1B family.SEQUENCE CAUTION Extended N-terminus.
created[InstanceEdit:212200] Caudy, M, 2008-02-08 20:35:02
descriptionrecommendedName: TATA box-binding protein-associated factor RNA polymerase I subunit B alternativeName: RNA polymerase I-specific TBP-associated factor 63 kDa shortName: TAFI63 alternativeName: TATA box-binding protein-associated factor 1B shortName: TBP-associated factor 1B alternativeName: Transcription initiation factor SL1/TIF-IB subunit B
geneNameTAF1B
identifierQ53T94
isSequenceChangedFALSE
keywordAcetylation
Alternative splicing
Direct protein sequencing
DNA-binding
Metal-binding
Nucleus
Proteomics identification
Reference proteome
Transcription
Transcription regulation
Zinc
Zinc-finger
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9909836] Weiser, Joel, 2024-05-14
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
nameTAF1B
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:9003860] ENSEMBL:ENSG00000115750 TAF1B [Homo sapiens]
secondaryIdentifierTAF1B_HUMAN
B4DI42
F8WD72
Q15574
Q8WVC3
sequenceLength588
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:250384] UniProt:Q53T94-2 TAF1B [Homo sapiens]
[ReferenceIsoform:406971] UniProt:Q53T94-1 TAF1B [Homo sapiens]
[ReferenceIsoform:8970766] UniProt:Q53T94-3 TAF1B [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:73691] TAF1B [nucleoplasm] [Homo sapiens]
[EntityWithAccessionedSequence:212348] TAF1B [nucleoplasm] [Homo sapiens]
[EntityWithAccessionedSequence:5138530] Ac-TAF1B [nucleoplasm] [Homo sapiens]
(referenceSequence)[ModifiedResidue:5138539] N6-acetyl-L-lysine at unknown position
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No pathways have been reviewed or authored by UniProt:Q53T94 TAF1B (212191)