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J. Exp. Med., Volume 187, Number 12, June 15, 1998 2031-2036

Nuclear Factor of Activated T Cells (NFAT)-dependent Transactivation Regulated by the Coactivators p300/CREB-binding Protein (CBP)

By Carmen García-Rodríguez and Anjana Rao

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.

Key words: transcriptional regulationhistone acetyltransferasesT cellsnuclear factor of activated T cellscytokine gene expression


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