1.3.3.8 tetrahydroberberine oxidase berberine biosynthesis - 1.14.19.68 (S)-canadine synthase berberine biosynthesis - 1.21.3.3 reticuline oxidase berberine biosynthesis - 2.1.1.117 (S)-scoulerine 9-O-methyltransferase berberine biosynthesis -