title: Is a Schiff base involved in the mechanism of the delta4-3-oxo steroid 5alpha- or 5beta-reductases from mammalian liver?
abstract: The saturation of the delta4-double bond of delta4-3-oxo steroids by the mammalian 5alpha- or 5beta-reductases is by an enzyme mechanism that does not involve a Schiff-base intermediate.
mesh_terms: D015113:Androstane-3,17-diol / Q000378:metabolism; D000818:Animals; D013196:Dihydrotestosterone / Q000378:metabolism; D005260:Female; D008099:Liver / Q000201:enzymology*; D008297:Male; D010088:Oxidoreductases / Q000378:metabolism*; D051381:Rats; D012545:Schiff Bases; D013739:Testosterone / Q000378:metabolism
chemical_list: D012545:Schiff Bases; D013196:Dihydrotestosterone; D015113:Androstane-3,17-diol; D013739:Testosterone; D010088:Oxidoreductases