ENZYME

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A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.

ENZYME entry: EC 2.1.1.83

Accepted Name
3,7-dimethylquercetin 4'-O-methyltransferase.
Alternative Name(s)
3,7-dimethylquercitin 4'-O-methyltransferase.
4'-OMT.
Flavonol 4'-methyltransferase.
Flavonol 4'-O-methyltransferase.
Reaction catalysed
S-adenosyl-L-methionine + 3',4',5-trihydroxy-3,7-dimethoxyflavone <=> S-adenosyl-L-homocysteine + 3',5-dihydroxy-3,4',7-trimethoxyflavone
Comment(s)
3,7-dimethylquercetagetin can also act as acceptor. Involved with EC 2.1.1.76 and EC 2.1.1.82 in the methylation of quercetin to 3,7,4'-trimethylquercetin in Chrysosplenium americanum. Does not act on flavones, dihydroflavonols, or their glucosides.
Cross-references
BRENDA	2.1.1.83
EC2PDB	2.1.1.83
ExplorEnz	2.1.1.83
PRIAM enzyme-specific profiles	2.1.1.83
KEGG Ligand Database for Enzyme Nomenclature	2.1.1.83
IUBMB Enzyme Nomenclature	2.1.1.83
IntEnz	2.1.1.83
MEDLINE	Find literature relating to 2.1.1.83
MetaCyc	2.1.1.83