KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.0006 | - |
5alpha-pregnan-3alpha,17alpha-diol-20-one | pH 7.4 | Homo sapiens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | - |
recombinant enzyme, expression in Saccharomyces cerevisiae, enzyme catalyzes both 17alpha-hydroxylation of steroids, EC 1.14.99.9, and 17,20-lyase reaction | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
17alpha-hydroxypregnenolone + ? + cytochrome b5 | - |
Homo sapiens | dehydroepiandrosterone + ? | - |
? | |
5alpha-pregnan-17alpha-ol-3,20-dione + ? | - |
Homo sapiens | androstanedione | very little product formation | ? | |
5alpha-pregnan-3alpha,17alpha-diol-20-one + ? + cytochrome b5 | better substrate than 17alpha-hydroxypregenolone | Homo sapiens | androsterone + ? | rapid reaction | ? |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
cytochrome b5 | 3fold stimulation of 17,20-lyase reaction of 5alpha-pregnan-3alpha,17alpha-diol-20-one | Homo sapiens |