Reaction catalyzed by catechol O-methyltransferase (2.1.1.6)
+
=
+
+
S-adenosyl-L-methionine
+
3,4-dihydroxybenzoic acid
=
S-adenosyl-L-homocysteine
+
4-hydroxy-3-methoxybenzoic acid
+
3-hydroxy-4-methoxybenzoic acid
