Enzymes [BR:mli01000] 1. Oxidoreductases 1.3 Acting on the CH-CH group of donors 1.3.1 With NAD+ or NADP+ as acceptor 1.3.1.22 3-oxo-5alpha-steroid 4-dehydrogenase (NADP+) MULP_02275 putative membrane protein K12343 SRD5A1; 3-oxo-5-alpha-steroid 4-dehydrogenase 1 [EC:1.3.1.22]