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Information on EC 2.1.1.355 - [histone H3]-lysine9 N-trimethyltransferase

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IUBMB Comments
This entry describes several enzymes that successively methylate the L-lysine9 residue of histone H3 (H3K9), ultimately generating a trimethylated form. These modifications influence the binding of chromatin-associated proteins. In general, the methylation of H3K9 leads to transcriptional repression of the affected target genes. cf. EC 2.1.1.367, [histone H3]-lysine9 N-methyltransferase, EC 2.1.1.368, [histone H3]-lysine9 N-dimethyltransferase, and EC 2.1.1.366, [histone H3]-N6,N6-dimethyl-lysine9 N-methyltransferase.
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The enzyme appears in viruses and cellular organisms
Synonyms
Clr4, dG9a, Dim-5, Dim-5 histone lysine methyltransferase, Dim-5 histone-3 lysine-9 methyltransferase, Dim5, DOT1L, EHMT1, EHMT2, ESET, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
3 S-adenosyl-L-methionine + a [histone H3]-L-lysine9 = 3 S-adenosyl-L-homocysteine + a [histone H3]-N6,N6,N6-trimethyl-L-lysine9
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overall reaction
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S-adenosyl-L-methionine + a [histone H3]-L-lysine9 = S-adenosyl-L-homocysteine + a [histone H3]-N6-methyl-L-lysine9
show the reaction diagram
(1a)
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S-adenosyl-L-methionine + a [histone H3]-N6,N6-dimethyl-L-lysine9 = S-adenosyl-L-homocysteine + a [histone H3]-N6,N6,N6-trimethyl-L-lysine9
show the reaction diagram
(1c)
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S-adenosyl-L-methionine + a [histone H3]-N6-methyl-L-lysine9 = S-adenosyl-L-homocysteine + a [histone H3]-N6,N6-dimethyl-L-lysine9
show the reaction diagram
(1b)
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S-adenosyl-L-methionine + histone L-lysine = S-adenosyl-L-homocysteine + histone N6-methyl-L-lysine
show the reaction diagram
PATHWAY SOURCE
PATHWAYS
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