2.1.1.140 (S)-reticuline biosynthesis (S)-reticuline biosynthesis - 2.1.1.140 (S)-reticuline biosynthesis I - - 2.1.1.140 Biosynthesis of secondary metabolites - 01110 2.1.1.140 Isoquinoline alkaloid biosynthesis - 00950 2.1.1.140 Metabolic pathways - 01100