histone H3K27 monomethyltransferase activity [GO_0140953]

histone H3K27 monomethyltransferase activity

ID: GO_0140953

Catalysis of the reaction: L-lysyl27-[histone H3] + S-adenosyl-L-methionine = H+ + N6-methyl-L-lysyl27-[histone H3] + S-adenosyl-L-homocysteine. This reaction is the addition of a single methyl group to the unmethylated lysine residue at position 27 of histone H3, producing histone H3K27me.

Comment: Note that the residue position corresponds to the canonical human H3 histone (UniProtKB:P84243); this residue is conserved across all eukaryotes. Residue 1 is the first residue following removal of the initiating Methionine (Met). Note that each histone is encoded by multiple genes, and sequences may vary across different genes within an organism.