ID   2.1.1.83
DE   3,7-dimethylquercetin 4'-O-methyltransferase.
AN   3,7-dimethylquercitin 4'-O-methyltransferase.
AN   4'-OMT.
AN   flavonol 4'-methyltransferase.
AN   flavonol 4'-O-methyltransferase.
CA   3',4',5-trihydroxy-3,7-dimethoxyflavone + S-adenosyl-L-methionine = 3',5-
CA   dihydroxy-3,4',7-trimethoxyflavone + H(+) + S-adenosyl-L-homocysteine.
CC   -!- 3,7-Dimethylquercetagetin can also act as acceptor.
CC   -!- Involved with EC 2.1.1.76 and EC 2.1.1.82 in the methylation of
CC       quercetin to 3,7,4'-trimethylquercetin in Chrysosplenium americanum.
CC   -!- Does not act on flavones, dihydroflavonols, or their glucosides.
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