2.1.1.76: quercetin 3-O-methyltransferase
This is an abbreviated version!
For detailed information about quercetin 3-O-methyltransferase, go to the full flat file.
Reaction
Synonyms
3-OMT, CdFOMT5, flavonoid 3-methyltransferase, flavonoid-O-methyltransferase, flavonol 3-O-methyltransferase, FOMT5, Mg2+-independent O-methyltransferase, MOMT3, More, quercetin 3-O-methyltransferase 1, S-adenosyl-L-methionine:quercetin 3-O-methyltransferase, trimethylfavonol 3'/5'-OMT
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Reaction
Reaction on EC 2.1.1.76 - quercetin 3-O-methyltransferase
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S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone = S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone
S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone = S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone
specific for quercetin, related enzymes bring about the 3-O-methylation of other flavonols, such as galangin and kaempferol
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S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone = S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone
ordered sequential bi-bi mechanism
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