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Histone acetylation and phosphorylation have separately been suggested to affect chromatin structure and gene expression. Here we report that these two modifications are synergistic. Stimulation of mammalian cells by epidermal growth factor (EGF) results in rapid and sequential phosphorylation and acetylation of H3, and these dimodified H3 molecules are preferentially associated with the EGF-activated...
Histone acetyltransferases (HATs) catalyze the acetyl-group transfer from acetyl-CoA to the -amino group of specific lysine residues within core histone proteins. HATs and other chromatin-remodeling enzymes have been recently shown to regulate gene activation within specific loci. To facilitate mechanistic studies, we have developed two continuous, nonradioactive assays for the prototypical GCN5...
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