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TAF4B
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For Research Use Only. Not For Clinical Use.
Background
TATA binding protein (TBP) and TBP-associated factors (TAFs) participate in the formation of the TFIID protein complex, which is involved in initiation of transcription of genes by RNA polymerase II. This gene encodes a cell type-specific TAF that may be responsible for mediating transcription by a subset of activators in B cells. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jun 2014]
Protein class
Disease related genes, Human disease related genes
Predicted location
Intracellular
Single cell type specificity
Cell type enhanced (Basal keratinocytes, Suprabasal keratinocytes, Plasma cells)
Immune cell specificity
Low immune cell specificity
Cell line specificity
Cell line enhanced (Daudi, U-266/70)
Interaction
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).
Molecular function
DNA-binding
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