ID 1.14.13.54 DE ketosteroid monooxygenase. AN steroid-ketone monooxygenase. CA (1) progesterone + NADPH + O2 + H(+) = testosterone acetate + NADP(+) + CA H2O. CA (2) androst-4-ene-3,17-dione + NADPH + O2 + H(+) = testololactone + CA NADP(+) + H2O. CA (3) 17alpha-hydroxyprogesterone + NADPH + O2 = androst-4-ene-3,17-dione + CA acetate + NADP(+) + H2O. CC -!- A single enzyme catalyzing three types of monooxygenase (Baeyer- CC Villiger oxidation) reactions. //