Term Name: 3-oxo-5-alpha-steroid 4-dehydrogenase activity
Synonyms: 3-keto-delta4-steroid-5alpha-reductase activity, 3-oxo-5alpha-steroid 4-dehydrogenase activity, 3-oxo-5alpha-steroid delta4-dehydrogenase activity, 3-oxo-5alpha-steroid:(acceptor) delta4-oxidoreductase activity, 3-oxo-5alpha-steroid:acceptor delta4-oxidoreductase activity, 3-oxosteroid delta4-dehydrogenase, 4-ene-3-ketosteroid-5alpha-oxidoreductase activity, 5alpha-reductase, delta4-3-keto steroid 5alpha-reductase activity, delta4-3-ketosteroid5alpha-oxidoreductase activity, delta4-3-oxo steroid reductase activity, delta4-3-oxosteroid-5alpha-reductase, delta4-5alpha-dehydrogenase activity, steroid 5 alpha reductase, steroid 5-alpha-reductase activity, steroid 5alpha-reductase, steroid delta4-5alpha-reductase activity, testosterone 5alpha-reductase
Definition: Catalysis of the reaction: a 3-oxo-5-alpha-steroid + acceptor = a 3-oxo-delta(4)-steroid + reduced acceptor.
Ontology: GO: Molecular Function [GO:0003865]    QuickGO    AmiGO

Relationships
is a type of: steroid dehydrogenase activity, acting on the CH-CH group of donors
has subtype: 3-oxo-5-alpha-steroid 4-dehydrogenase (NADP+) activity