methylquercetagetin 6-O-methyltransferase activity
Catalysis of the reaction: 3',4',5,6-tetrahydroxy-3,7-dimethoxyflavone + S-adenosyl-L-methionine(1+) = 3',4',5-trihydroxy-3,6,7-trimethoxyflavone + S-adenosyl-L-homocysteine + H+.
GO:0008757
S-adenosylmethionine-dependent methyltransferase activity
is_a
6-OMT
related
S-adenosyl-L-methionine:3',4',5,6-tetrahydroxy-3,7-dimethoxyflavone 6-O-methyltransferase activity
related
flavonol 6-O-methyltransferase activity
related
flavonol 6-methyltransferase activity
related