1.3.99.4	1-ene-dehydrogenase, 3-keto-5alpha-steroid DELTA(1)-dehydrogenase, 3-ketosteroid 1(2)-dehydrogenase, 3-ketosteroid delta1-dehydrogenase, 3-ketosteroid-1-en-dehydrogenase, 3-ketosteroid-D1-dehydrogenase, 3-ketosteroid-DELTA1-dehydrogenase, 3-ketosteroid-DELTA1-dehydrogenases, 3-oxosteroid D1-dehydrogenase, 3-oxosteroid Delta1-dehydrogenase, 3-oxosteroid:(2,6-dichlorphenolindophenol) DELTA1-oxidoreductase, 3-oxosteroid:(2,6-dichlorphenolindophenol)D1-oxidoreductase, 4-en-3-oxosteroid:(acceptor)-1-en-oxido-reductase, 4-ene-3-oxosteroid: (acceptor)-1-ene-oxoreductase, 4-ene-3-oxosteroid:(acceptor)l-ene-oxidoreductase, AcmB, AcmB2, cholest-4-en-3-one DELTA1-dehydrogenase, D1-dehydrogenase, D1-steroid reductase, dehydrogenase, 3-oxo steroid Delta 1-, Delta1-dehydrogenase, DELTA1-KstD, DELTA1-KSTD1, DELTA1-KstDA, DELTA1-KstDR, DELTA1-steroid reductase, ketosteroid DELTA1-dehydrogenase, KsdD, KsdD1, KsdD2, KsdD3, KsdD5, KsdDM, KSDH, KstD, KSTD1, KSTD2, KSTD3, KSTD3 orthologue, KstDF, MnKstD1, MnKstD2, MsKstD1, MsKstD2, MsKstD3, MsKstD4, ReKstD1, Rv3537, steroid-1-dehydrogenase	-	-, 656722, 675829, 684994, 688748, 723868, 724000, 724074, 724670, 725830, 742850, 743221, 743236, 762654, 762659, 763042, 763180, 763441, 763443, 763735, 763772	
1.3.99.4	KSTD1, KSTD2, KSTD3	isozyme	-, 684994