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