Reaction catalyzed by tetrahydrocolumbamine 2-O-methyltransferase (2.1.1.89) show all sequences for 2.1.1.89
+
=
+
S-adenosyl-L-methionine
+
5,8,13,13a-tetrahydrocolumbamine
=
S-adenosyl-L-homocysteine
+
tetrahydropalmatine