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J. Exp. Med.,
Volume 187, Number 12, June 15, 1998 2031-2036
By
From the Department of Pathology, Harvard Medical School, and the Center for Blood Research,
Boston, Massachusetts 02115
p300 and cAMP response element-binding protein (CREB)-binding protein (CBP) are members of a family of coactivators involved in the regulation of transcription and chromatin. We
show that transcription factors of the nuclear factor of activated T cells (NFAT) family bind
p300/CBP and recruit histone acetyltransferase activity from T cell nuclear extracts. The NH2-terminal transactivation domain of NFAT1 and the phospho-CREB- and E1A-binding sites of p300/CBP are involved in the interaction. The viral oncoprotein E1A inhibits NFAT-dependent transactivation in a p300-dependent manner. Recruitment of the coactivators p300/CBP
by the transactivation domains of NFAT proteins is likely to play a critical role in NFAT-dependent gene expression during the immune response.
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