Psoralen synthase () is an enzyme that catalyzes the chemical reaction
The enzyme is a cytochrome P450 protein containing heme, isolated from Ammi majus. It uses molecular oxygen for the oxidation and requires a partner cytochrome P450 reductase for functional expression. This uses nicotinamide adenine dinucleotide phosphate. The oxidoreductase is also called CYP71AJ1.
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