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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

CREB-binding protein/p300 are transcriptional coactivators of p65.

CBP (CREB-binding protein) and p300 are versatile coactivators that link transcriptional activators to the basal transcriptional apparatus. In the present study, we identify CBP and p300 as coactivators of the nuclear factor-kappaB (NF-kappaB) component p65 (RelA). Consistent with their role as coactivators, both CBP and p300 potentiated p65-activated transcription of E-selectin and VCAM-1-CAT reporter constructs. The N- and C-terminal domains of both CBP/p300 functionally interact with a region of p65 containing the transcriptional activation domain as demonstrated by mammalian two-hybrid assays. Direct physical interactions of CBP/p300 with p65 were demonstrated by glutathione S-transferase fusion protein binding, and coimmunoprecipitation/Western blot studies. The adenovirus E1A 12S protein, which complexes with CBP and p300, inhibited p65-dependent gene expression. Reporter gene expression could be rescued from E1A inhibition by overexpression of CBP or p300. CBP and p300 act as coactivators of p65-driven gene activation and may play an important role in the cytokine-induced expression of various immune and inflammatory genes.[1]


  1. CREB-binding protein/p300 are transcriptional coactivators of p65. Gerritsen, M.E., Williams, A.J., Neish, A.S., Moore, S., Shi, Y., Collins, T. Proc. Natl. Acad. Sci. U.S.A. (1997) [Pubmed]
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