3,9-dihydroxypterocarpan 6a-monooxygenase () is an enzyme that catalyzes the chemical reaction
The four substrates of this enzyme are (6aR,11aR)-3,9-dihydroxypterocarpan, reduced nicotinamide adenine dinucleotide phosphate (NADPH), oxygen, and a proton. Its products are glycinol, oxidised NADP+, and water.
3,9-dihydroxypterocarpan 6a-monooxygenase is a cytochrome P450 protein containing heme. It requires a partner, cytochrome P450 reductase which uses NADPH, for functional expression. The systematic name of this enzyme class is (6aR,11aR)-3,9-dihydroxypterocarpan,NADPH:oxygen oxidoreductase (6a-hydroxylating). Other names in common use include 3,9-dihydroxypterocarpan 6a-hydroxylase, and 3,9-dihydroxypterocarpan 6alpha-monooxygenase (erroneous). It is part of the biosynthetic pathway to phytoalexins in soybean.
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