The TAF(II)250 subunit of TFIID has histone acetyltransferase activity

Craig A. Mizzen, Xiang Jiao Yang, Tetsuro Kokubo, James E. Brownell, Andrew J. Bannister, Tom Owen-Hughes, Jerry Workman, Lian Wang, Shelley L. Berger, Tony Kouzarides, Yoshihiro Nakatani, C. David Allis

Research output: Contribution to journalArticlepeer-review


The transcription initiation factor TFIID is a multimeric protein complex composed of TATA box-binding protein (TBP) and many TBP-associated factors (TAF(II)s). TAF(II)s are important cofactors that mediate activated transcription by providing interaction sites for distinct activators. Here, we present evidence that human TAF(II)250 and its homologs in Drosophila and yeast have histone acetyltransferase (HAT) activity in vitro. HAT activity maps to the central, most conserved portion of dTAF(II)230 and yTAF(II)130. The HAT activity of dTAF(II)230 resembles that of yeast and human GCN5 in that it is specific for histones H3 and H4 in vitro. Our findings suggest that targeted histone acetylation at specific promoters by TAF(II)250 may be involved in mechanisms by which TFIID gains access to transcriptionally repressed chromatin.

Original languageEnglish (US)
Pages (from-to)1261-1270
Number of pages10
Issue number7
StatePublished - Dec 27 1996
Externally publishedYes

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


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