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Information on EC 2.1.1.83 - 3,7-dimethylquercetin 4'-O-methyltransferase

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IUBMB Comments
3,7-Dimethylquercetagetin can also act as acceptor. Involved with EC 2.1.1.76 quercetin 3-O-methyltransferase and EC 2.1.1.82 3-methylquercetin 7-O-methyltransferase in the methylation of quercetin to 3,7,4'-trimethylquercetin in Chrysosplenium americanum. Does not act on flavones, dihydroflavonols, or their glucosides.
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The expected taxonomic range for this enzyme is: Chrysosplenium americanum
Synonyms
4'-OMT, flavonol 4'-O-methyltransferase, methyltransferase, flavonol 4'-, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
S-adenosyl-L-methionine + 5,3',4'-trihydroxy-3,7-dimethoxyflavone = S-adenosyl-L-homocysteine + 5,3'-dihydroxy-3,7,4'-trimethoxyflavone
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