label: 6a-hydroxymaackiain-3-O-methyltransferase activity
label_lc: 6a-hydroxymaackiain-3-o-methyltransferase activity
description: "Catalysis of the reaction: (+)-6a-hydroxymaackiain + S-adenosyl-L-methionine = H+ + (+)-pisatin + S-adenosyl-L-homocysteine."