Takechi S and Nakayama T (1999) Sas3 is a histone acetyltransferase and requires a zinc finger motif. Biochem Biophys Res Commun 266(2):405-10
Abstract: SAS3 was originally isolated as a gene related to SAS2, which encodes a positive regulator of transcriptional silencing in yeast. The Sas3 protein possesses an evolutionally conserved domain that is shared by a group of SAS-like factors. This conserved domain contains an atypical zinc finger motif and a putative acetyl-CoA binding motif. We showed that recombinant Sas3 exhibits histone acetyltransferase (HAT) activity toward acetylate core histones H2A, H3, and H4. This substrate specificity is similar to those of Tip60 and Esa1. Analysis of a series of deletion mutants revealed that the minimum region required for HAT activity is located within amino acid residues 241-577, including the domain conserved in the MYST family proteins. Amino acid substitution mutant analysis showed that both the acetyl-CoA binding motif and the zinc finger motif are required for HAT activity. These results suggest that SAS3 and its family members require the zinc finger motif for their activity.CI - Copyright 1999 Academic Press.
|Status: Published||Type: Journal Article||PubMed ID: 10600516|
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