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cytochrome P450 family 71 and similar cytochrome P450s The group includes plant cytochrome P450 family 71 (CYP71) proteins, as well as some CYPs designated as belonging to a different family including CYP99A1, CYP83B1, and CYP84A1, among others. Characterized CYP71 enzymes include: parsnip (Pastinaca sativa) CYP71AJ4, also called angelicin synthase, that converts (+)-columbianetin to angelicin, an angular furanocumarin; periwinkle (Catharanthus roseus) CYP71D351, also called tabersonine 16-hydroxylase 2, that is involved in the foliar biosynthesis of vindoline; sorghum CYP71E1, also called 4-hydroxyphenylacetaldehyde oxime monooxygenase, that catalyzes the conversion of p-hydroxyphenylacetaldoxime to p-hydroxymandelonitrile; as well as maize CYP71C1, CYP71C2, and CYP71C4, which are monooxygenases catalyzing the oxidation of 3-hydroxyindolin-2-one, indolin-2-one, and indole, respectively. CYPs within a single CYP71 subfamily, such as the C subfamily, usually metabolize similar/related compounds. The CYP71-like family belongs to the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",