Journal
EMBO REPORTS
Volume 3, Issue 1, Pages 50-55Publisher
WILEY
DOI: 10.1093/embo-reports/kvf006
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Funding
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM058012] Funding Source: NIH RePORTER
- NIGMS NIH HHS [GM58012, R01 GM058012] Funding Source: Medline
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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 CEP-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.
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