• monooxygenase activity • iron ion binding • oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen • (S)-limonene 6-monooxygenase activity • (S)-limonene 7-monooxygenase activity • oxygen binding • heme binding • metal ion binding
This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and is known to metabolize many xenobiotics, including the anticonvulsive drug mephenytoin, omeprazole, diazepam and some barbiturates. Polymorphism within this gene is associated with variable ability to metabolize mephenytoin, known as the poor metabolizer and extensive metabolizer phenotypes. The gene is located within a cluster of cytochrome P450 genes on chromosome 10q24.
Genetic polymorphism exists for CYP2C19 expression, with approximately 3–5% of Caucasian and 15–20% of Asian populations being poor metabolisers with no CYP2C19 function.
It has been annotated as (R)-limonene 6-monooxygenase and (S)-limonene 6-monooxygenase in UniProt.
^ Where classes of agents are listed, there may be exceptions within the class
^ ab Mentioned both in the reference named FASS and were previously mentioned in Wikipedia. Further contributions may follow other systems
^ Swedish environmental classification of pharmaceuticals Facts for prescribers (Fakta för förskrivare)
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