EC Number |
Reaction |
Reference |
---|
1.14.14.154 | a 14alpha-methylsteroid + [reduced NADPH-hemoprotein reductase] + O2 = a 14alpha-hydroxymethylsteroid + [oxidized NADPH-hemoprotein reductase] + H2O |
(1a) |
- |
1.14.14.154 | a 14alpha-hydroxymethylsteroid + [reduced NADPH-hemoprotein reductase] + O2 = a 14alpha-formylsteroid + [oxidized NADPH-hemoprotein reductase] + 2 H2O |
(1b) |
- |
1.14.14.154 | a 14alpha-formylsteroid + [reduced NADPH-hemoprotein reductase] + O2 = a DELTA14-steroid + formate + [oxidized NADPH-hemoprotein reductase] + H2O |
(1c) |
- |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
active site structure, structure-function relationship |
672607 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
heme iron reduction as a rate-limiting step |
672195 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
mechanism |
-, 285347, 285351, 285355 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
reaction mechanism, phyla-specific residues in CYP51 |
674700 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
regulation |
285353 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
stoichiometry |
285351 |
1.14.14.154 | a 14alpha-methylsteroid + 3 [reduced NADPH-hemoprotein reductase] + 3 O2 = a DELTA14-steroid + formate + 3 [oxidized NADPH-hemoprotein reductase] + 4 H2O |
The heme-thiolate enzyme, P-450, catalyses successive hydroxylations of the 14alpha-methyl group and C-15, followed by elimination as formate leaving the 14(15) double bond. This enzyme acts on a range of steroids with a 14alpha-methyl group |
- |