Biosynthesis of mesembrine. The incorporation of one-carbon units and the origin of the C6 unit.
D000470:Alkaloids / Q000096:biosynthesis*; D002247:Carbon Isotopes; D008715:Methionine / Q000378:metabolism*; D010649:Phenylalanine / Q000378:metabolism*; D010946:Plants, Medicinal / Q000378:metabolism; D014443:Tyrosine / Q000378:metabolism*
D000470:Alkaloids; D002247:Carbon Isotopes; D014443:Tyrosine; D010649:Phenylalanine; D008715:Methionine