HAT activity is essential for CBP-1-dependent transcription and differentiation in Caenorhabditis elegans

UMMS Affiliation

Graduate School of Biomedical Sciences; Department of Pathology; Program in Molecular Medicine

Publication Date


Document Type



Life Sciences | Medicine and Health Sciences


The p300/CBP family of transcriptional coactivators possesses multiple functional domains, including a histone acetyltransferase (HAT) and several activation domains. A number of models have been proposed to account for their roles in transcriptional activation, including interactions with basal transcription machinery and chromatin remodeling. However, individual contributions of these domains to transcriptional activation and their significance in living organisms remain unclear. We addressed the importance of the HAT activity of CBP-1, the worm ortholog of p300/CBP, in Caenorhabditis elegans with three different and complementary approaches. These include allele-specific RNA-mediated interference (RNAi), genetic rescue and the use of a specific chemical inhibitor of the p300/CBP HAT. Our findings demonstrate that HAT activity is of primary importance for CBP-1 to regulate transcription and to promote differentiation during C. elegans embryogenesis.

DOI of Published Version



EMBO Rep. 2002 Jan;3(1):50-5. Epub 2001 Dec 19. Link to article on publisher's site

Journal/Book/Conference Title

EMBO reports

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Link to Article in PubMed

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