title: HATs off to PIC assembly.
abstract: There are many regulated steps in the assembly of a transcription preinitiation complex (PIC). In this issue of Molecular Cell, Black et. al. (2006) reveal a catalytic switch mechanism in which autoacetylation of the HAT p300 triggers its dissociation from a promoter in a manner that is coupled to TFIID association.
authors.affiliation: Center for Gene Regulation, USA.
authors.forename: B Franklin
authors.initials: BF
authors.lastname: Pugh
mesh_terms: D000107:Acetylation; D001667:Binding, Competitive; D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism*; D006367:HeLa Cells; D051548:Histone Acetyltransferases / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D011401:Promoter Regions, Genetic; D035362:Transcription Factor TFIID / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*; D015533:Transcriptional Activation; D050880:p300-CBP Transcription Factors; D000099224:p300-CBP-Associated Factor
chemical_list: D018797:Cell Cycle Proteins; D051548:Histone Acetyltransferases; D035362:Transcription Factor TFIID; D014157:Transcription Factors; D050880:p300-CBP Transcription Factors; D000099224:p300-CBP-Associated Factor