Journal
CURRENT OPINION IN STRUCTURAL BIOLOGY
Volume 13, Issue 6, Pages 699-705Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.sbi.2003.10.003
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The realisation that SET domains, which are found in numerous proteins involved in chromatin regulation, catalyse the methylation of lysine residues has led to intense interest in their cellular, biochemical and structural properties. The structures of five SET domain proteins have been reported over the past year. SET domains possess a novel fold, and use adjacent domains for both structural stabilisation and the completion of their active sites. The cofactor S-adenosyl-L-methionine and peptide substrates bind on opposite faces of the SET domain. Remarkably, the sidechain of the target lysine approaches the transferred methyl group through a narrow channel that passes through the middle of the domain.
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