(S)-corytuberine synthase is a

cytochrome P450 Cytochromes P450 (P450s or CYPs) are a Protein superfamily, superfamily of enzymes containing heme as a cofactor (biochemistry), cofactor that mostly, but not exclusively, function as monooxygenases. However, they are not omnipresent; for examp ...

enzyme An enzyme () is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different mol ...

purified from the

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

'' Coptis japonica'' (Japanese goldthread), with EC number and CYP Symbol CYP80G2 (Cytochrome P450, family 80, member G2), and catalyses an intramolecular C-C phenol coupling of (S)-reticuline in

magnoflorine ''(S)-''Magnoflorine is a quaternary benzylisoquinoline alkaloid (BIA) of the aporphine structural subgroup which has been isolated from various species of the family Menispermaceae, such as ''Pachygone ovata,'' '' Sinomenium acutum,'' and '' Ci ...

biosynthesis.

References

EC 1.14.19 80 {{Enzyme-stub