Amorpha-4,11-diene 12-monooxygenase (, CYP71AV1) is an enzyme with systematic name amorpha-4,11-diene,NADPH:oxygen oxidoreductase (12-hydroxylating). This enzyme catalyses the following overall chemical reaction
The reaction proceeds in three oxidations, each catalysed by the enzyme, which is a cytochrome P450 protein containing heme, isolated from Artemisia annua. It requires a partner cytochrome P450 reductase for functional expression. This uses nicotinamide adenine dinucleotide phosphate. The product is used by the plant in the biosynthesis of artemisinin.
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