a 3'-methoxyisoflavone + S-adenosyl-L-homocysteine + H(+) => a 3'-hydroxyisoflavone + S-adenosyl-L-methionine
a 3'-methoxyisoflavone + s-adenosyl-l-homocysteine + h(+) => a 3'-hydroxyisoflavone + s-adenosyl-l-methionine
a 3'-methoxyisoflavone + S-adenosyl-L-homocysteine + H(+) => a 3'-hydroxyisoflavone + S-adenosyl-L-methionine
a 3'-methoxyisoflavone + s-adenosyl-l-homocysteine + h(+) => a 3'-hydroxyisoflavone + s-adenosyl-l-methionine