PCAF (histone acetyltransferase KAT2B) functions as a histone acetyltransferase (HAT) to promote transcriptional activation. It has significant histone acetyltransferase activity with core histones (H3 and H4) and nucleosome core particles. PCAF also acetylates non-histone proteins such as ACLY, PLK4, and TBX5. It inhibits cell-cycle progression and counteracts the mitogenic activity of the adenoviral oncoprotein E1A. PCAF also acts as a circadian transcriptional coactivator which enhances the activity of the circadian transcriptional activators NPAS2-ARNTL/BMAL1 and CLOCK-ARNTL/BMAL1 heterodimers. It is involved in heart and limb development by mediating acetylation of TBX5 and acetylation regulating nucleocytoplasmic shutting of TBX5.
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Protein Aliases: CREBBP-associated factor; Histone acetylase PCAF; Histone acetyltransferase KAT2B; Histone acetyltransferase PCAF; K(lysine) acetyltransferase 2B; Lysine acetyltransferase 2B; P/ PCAF; P/CAF; P300/CBP-associated factor; Spermidine acetyltransferase KAT2B
Gene Aliases: A930006P13Rik; AI461839; AW536563; CAF; KAT2B; P/CAF; PCAF