ID 2.1.1.76 DE quercetin 3-O-methyltransferase. AN flavonol 3-O-methyltransferase. CA quercetin + S-adenosyl-L-methionine = 3',4',5,7-tetrahydroxy-3- CA methoxyflavone + H(+) + S-adenosyl-L-homocysteine. CC -!- Specific for quercetin. CC -!- Related enzymes bring about the 3-O-methylation of other flavonols, CC such as galangin and kaempferol. DR M9Z1G5, MOMT3_SOLHA; A0A3Q7HYF0, MOMT3_SOLLC; //