histone H3K9 monomethyltransferase activity [GO_0140948]

Catalysis of the reaction: L-lysyl9-[histone H3] + S-adenosyl-L-methionine = H+ + N6-methyl-L-lysyl9-[histone H3] + S-adenosyl-L-homocysteine. This reaction is the addition of a methyl group to the unmethylated lysine residue at position 9 of histone H3, producing histone H3K9me.

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Class
GO

histone H3K9 monomethyltransferase activity

ID: GO_0140948

Class

Catalysis of the reaction: L-lysyl9-[histone H3] + S-adenosyl-L-methionine = H+ + N6-methyl-L-lysyl9-[histone H3] + S-adenosyl-L-homocysteine. This reaction is the addition of a methyl group to the unmethylated lysine residue at position 9 of histone H3, producing histone H3K9me.

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.

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Classification

histone H3K9 methyltransferase activity

Alternative Names

Synonym	Scope	Reference
histone H3K9 methylation	broad synonym
histone H3-K9 methylation	broad synonym
histone H3K9 monomethylase activity	exact synonym
histone lysine N-monomethyltransferase activity (H3-K9 specific)	exact synonym

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