Steroid 17-alpha-hydroxylase/17,20 lyase


  • Accession: P05093
  • Swissprot: CP17A_HUMAN
  • Organism: Homo sapiens
  • Gene: CYP17A1
  • Target class: Enzyme

Drug Relations:

abiraterone acetate
Abiraterone acetate is converted in vivo to abiraterone, an androgen biosynthesis inhibitor, that inhibits 17 alpha-hydroxylase/C17,20-lyase (CYP17). This enzyme is expressed in testicular, adrenal, and prostatic tumor tissues and is required for androgen biosynthesis. CYP17 catalyzes two sequential reactions: 1) the conversion of pregnenolone and progesterone to their 17alpha-hydroxy derivatives by 17alpha-hydroxylase activity and 2) the subsequent formation of dehydroepiandrosterone (DHEA) and androstenedione, respectively, by C17,20 lyase activity. DHEA and androstenedione are androgens and are precursors of testosterone. Inhibition of CYP17 by abiraterone can also result in increased mineralocorticoid production by the adrenals. Androgen sensitive prostatic carcinoma responds to treatment that decreases androgen levels. Androgen deprivation therapies, such as treatment with GnRH agonists or orchiectomy, decrease androgen production in the testes but do not affect androgen production by the adrenals or in the tumor. Abiraterone acetate decreased serum testosterone and other androgens in patients in the placebo-controlled clinical trial. It is not necessary to monitor the effect of abiraterone acetate on serum testosterone levels. Bioactivity details MOA
Broad spectrum antifungal agent used for long periods at high doses, especially in immunosuppressed patients. Bioactivity details MOA
Bioactivity details MOA
An imidazole derivative with a broad spectrum of antimycotic activity. It inhibits biosynthesis of the sterol ergostol, an important component of fungal CELL MEMBRANES. Its action leads to increased membrane permeability and apparent disruption of enzyme systems bound to the membrane. Bioactivity details MOA
An imidazole derivative that is commonly used as a topical antifungal agent. Bioactivity details MOA
Bioactivity details MOA
An imidazole antifungal agent that is used topically and by intravenous infusion. Bioactivity details MOA
testosterone propionate
An ester of TESTOSTERONE with a propionate substitution at the 17-beta position. Bioactivity details MOA
Bioactivity details MOA