ID 2.1.1.117 DE (S)-scoulerine 9-O-methyltransferase. CA (S)-scoulerine + S-adenosyl-L-methionine = (S)-tetrahydrocolumbamine + CA H(+) + S-adenosyl-L-homocysteine. CC -!- The product of this reaction is a precursor for protoberberine CC alkaloids in plants. DR A0A2S1WBY6, OMT2B_PAPSO; A0A2S1WC15, OMT3B_PAPSO; Q39522, SMT_COPJA ; DR I3V6A7, SOMT1_PAPSO; I3PLQ6, SOMT2_PAPSO; I3PLQ7, SOMT3_PAPSO; //