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. 2021 Dec 16;11(1):60–76. doi: 10.1093/toxres/tfab113

Table 1.

Selected enzymes, along with their protein databank id and roles in steroid hormone synthesis, as well as their FDA-approved inhibitors

SN Name of enzyme and protein data Bank ID Role of enzyme in steroid hormones synthesis Inhibitor ligands and their therapeutic uses
1 CYP11A Converts cholesterol to pregnenolone Aminoglutethimide (PUB Chem ID 2145)
3N9Z Therapeutic use—
• Anticonvulsant in the treatment of petit mal epilepsy
• Steroidogenesis inhibitor in the treatment of Cushing’s syndrome
2 CYP17A1 Converts pregnenolone to dehydroepiandrosterone Abiraterone (PUB Chem ID 9821849)
4NKY Therapeutic use—
• Prostate cancer
3 Hydroxysteroid dehydrogenase Converts pregnenolone to progesterone Trilostane (PUB Chem ID 656583)
1HDC Therapeutic use—
• Cushing’s syndrome
• Conn’s syndrome
• Postmenopausal breast cancer
4 CYP11B1 Converts progesterone to corticosterone Metyrapone (PUB Chem ID 4174)
6M7X Therapeutic use—
• Cushing’s syndrome
5 CYP19A1 Converts androstenedione to testosterone and estradiol Anastrozole (PUB Chem ID 2187)
3S79 Therapeutic use—
• Breast cancer
6 CYP11B2 Converts testosterone to aldosterone Metyrapone (PUB Chem ID 4174)
4DVQ Therapeutic use—
• Cushing’s syndrome