label: syringetin 3-O-methyltransferase activity
label_lc: syringetin 3-o-methyltransferase activity
description: "Catalysis of the reaction: S-adenosyl-L-methionine + syringetin = 3,3',5'-O-trimethylmyricetin + H(+) + S-adenosyl-L-homocysteine."