Tags: Enzyme.
In enzymology a steroid 9alpha-monooxygenase (EC 1.14.99.24) is an enzyme that catalyzes the chemical reactionpregna-49(11)-diene-320-dione + AH2 + O2 911alpha-epoxypregn-4-ene-320-dione + A + H2OThe 3 substrates of this enzyme are pregna-49(11)-diene-320-dione an electron acceptor AH2 and O2 whereas its 3 products are 911alpha-epoxypregn-4-ene-320-dione the reduction product A and H2O.This enzyme belongs to the family of oxidoreductases specifically those acting on paired donors with O2 as oxidant and incorporation or reduction of oxygen.