TAF9 Antibody – Rabbit Polyclonal

Initiation of transcription by RNA polymerase II requires the activities of more than 70 polypeptides. The protein that coordinates these activities is transcription factor IID (TFIID), which binds to the core promoter to position the polymerase properly, serves as the scaffold for assembly of the remainder of the transcription complex, and acts as a channel for regulatory signals. TFIID is composed of the TATA-binding protein (TBP) and a group of evolutionarily conserved proteins known as TBP-associated factors or TAFs. TAFs may participate in basal transcription, serve as coactivators, function in promoter recognition or modify general transcription factors (GTFs) to facilitate complex assembly and transcription initiation. This gene encodes one of the smaller subunits of TFIID that binds to the basal transcription factor GTF2B as well as to several transcriptional activators such as p53 and VP16. In human, TAF9 and AK6 (GeneID: 102157402) are two distinct genes that share 5' exons. A similar but distinct gene (TAF9L) has been found on the X chromosome and a pseudogene has been identified on chromosome 19. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

TAFII31: a component of the transcription factor IID (TFIID) complex, PCAF histone acetylase complex and TBP-free TAFII complex (TFTC). TIIFD is essential for mediating regulation of RNA polymerase transcription. TAFII31 binds to p53, the basal transcription factor GTF2B, and the acidic transactivator viral protein 16 (VP16). It is a coactivator for P53.

Protein type: EC 2.7.4.3; Acetyltransferase; Kinase, other; DNA-binding; Transcription initiation complex

Chromosomal Location of Human Ortholog: 5q13.2

Cellular Component: nucleoplasm; PCAF complex; transcription factor TFIID complex

Molecular Function: protein binding; histone acetyltransferase activity; transcription activator binding; DNA binding; protein heterodimerization activity; p53 binding; transcription coactivator activity

Biological Process: transcription from RNA polymerase II promoter; transcription initiation from RNA polymerase II promoter; establishment and/or maintenance of chromatin architecture; protein stabilization; viral reproduction; RNA elongation from RNA polymerase II promoter; gene expression; positive regulation of transcription from RNA polymerase II promoter; positive regulation of cell growth; response to DNA damage stimulus; negative regulation of proteasomal ubiquitin-dependent protein catabolic process; negative regulation of apoptosis