2.1.1.270 (+)-6a-hydroxymaackiain 3-O-methyltransferase 1, 6a-HMK methyltransferase, 6a-hydroxymaackiain methyltransferase, HI4'OMT/HM3OMT, HMM1, HMM2, hmm6, hydroxymaackiain methyltransferase, IOMT8, S-adenosyl-L-methionine: 2-hydroxyisoflavanone 4'-O-methyltransferase