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Proc Natl Acad Sci U S A. 1995 May 23;92(11):5154-8.

Human TAFII31 protein is a transcriptional coactivator of the p53 protein.

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  • 1Department of Molecular Biology, Princeton University, NJ 08544-1014, USA.

Abstract

The p53 protein activates transcription of a target gene by binding to a specific DNA response element and interacting with the transcriptional apparatus of RNA polymerase II. The amino-terminal domain of p53 interacts with a component of the TFIID basal transcription complex. The human TATA-binding-protein-associated factor TAFII31, a component of TFIID, has been identified as a critical protein required for p53-mediated transcriptional activation. TAFII31 and p53 proteins bind to each other via amino acid residues in the amino-terminal domain of p53 that are essential for transcription. Antibodies directed against TAFII31 protein inhibit p53-activated but not basal transcription in vitro. These results demonstrate that TAFII31 is a coactivator for the p53 protein.

PMID:
7761466
[PubMed - indexed for MEDLINE]
PMCID:
PMC41867
Free PMC Article
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