Target type: biologicalprocess
The chemical reactions and pathways resulting in the formation of glucocorticoids, hormonal C21 corticosteroids synthesized from cholesterol. [ISBN:0198506732]
Glucocorticoid biosynthesis is a complex multi-step process that begins in the adrenal cortex, specifically within the zona fasciculata. The process is initiated by the activation of the enzyme cholesterol side-chain cleavage enzyme (CYP11A1), also known as P450scc, by the hormone adrenocorticotropic hormone (ACTH). ACTH is secreted by the anterior pituitary gland in response to stress or low levels of glucocorticoids.
The process starts with cholesterol, which is transported from the bloodstream into the adrenal cortex cells. CYP11A1 cleaves the side chain of cholesterol, converting it to pregnenolone, the first steroid hormone in the pathway. Pregnenolone is then transported to the smooth endoplasmic reticulum, where it undergoes further enzymatic transformations.
The next step involves the enzyme 3β-hydroxysteroid dehydrogenase (3β-HSD), which converts pregnenolone to progesterone. Progesterone then undergoes a series of enzymatic reactions catalyzed by enzymes such as 21-hydroxylase (CYP21A2), 11β-hydroxylase (CYP11B1), and 18-hydroxylase (CYP18A1). These enzymes introduce hydroxyl groups at specific positions on the steroid molecule, ultimately leading to the formation of cortisol, the main glucocorticoid in humans.
In summary, the glucocorticoid biosynthetic process involves a series of enzymatic reactions that convert cholesterol into cortisol, the primary glucocorticoid hormone. This complex process is regulated by ACTH, a hormone secreted from the pituitary gland, and is crucial for maintaining homeostasis in the body.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| Cytochrome P450 11B1, mitochondrial | A protein that is a translation product of the CYP11B1 gene in cow. [PRO:DNx, UniProtKB:P15150] | Bos taurus (cattle) |
| Cytochrome P450 11B1, mitochondrial | A cytochrome P450 11B that is a translation product of the CYP11B1 gene in human. [PRO:DNx, UniProtKB:P15538] | Homo sapiens (human) |
| Steroid 21-hydroxylase | A steroid 21-hydroxylase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P08686] | Homo sapiens (human) |
| Steroid 17-alpha-hydroxylase/17,20 lyase | A cytochrome P450 17A1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P05093] | Homo sapiens (human) |
| Cholesterol side-chain cleavage enzyme, mitochondrial | A cytochrome P450 11A1, mitochondrial that is encoded in the genome of human. [PRO:DNx, UniProtKB:P05108] | Homo sapiens (human) |
| Cytochrome P450 11B2, mitochondrial | A cytochrome P450 11B that is a translation product of the CYP11B2 gene in human. [PRO:DNx, UniProtKB:P19099] | Homo sapiens (human) |
| Cytochrome P450 11B1, mitochondrial | A cytochrome P450 11B that is a translation product of the CYP11B1 gene in human. [PRO:DNx, UniProtKB:P15538] | Homo sapiens (human) |
| Steroid 21-hydroxylase | A steroid 21-hydroxylase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P08686] | Homo sapiens (human) |
| Steroid 17-alpha-hydroxylase/17,20 lyase | A cytochrome P450 17A1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P05093] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| aminoglutethimide | aminoglutethimide : A dicarboximide that is a six-membered cyclic compound having ethyl and 4-aminophenyl substituents at the 3-position. Aminoglutethimide: An aromatase inhibitor that is used in the treatment of advanced BREAST CANCER. | dicarboximide; piperidones; substituted aniline | adrenergic agent; anticonvulsant; antineoplastic agent; EC 1.14.14.14 (aromatase) inhibitor |
| bay h 4502 | 1-[biphenyl-4-yl(phenyl)methyl]imidazole : A member of the class of imidazoles carrying an alpha-(biphenyl-4-yl)benzyl substituent at position 1. bifonazole : A racemate comprising equimolar amounts of R- and S-bifonazole. It is a broad spectrum antifungal drug used for the treatment of fungal skin and nail infections. | biphenyls; imidazoles | |
| clotrimazole | conazole antifungal drug; imidazole antifungal drug; imidazoles; monochlorobenzenes | antiinfective agent; environmental contaminant; xenobiotic | |
| econazole | 1-{2-(4-chlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl}imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 4-chlorobenzyl group. econazole : A racemate composed of equimolar amounts of (R)- and (S)-econazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections. Econazole: An imidazole derivative that is commonly used as a topical antifungal agent. | dichlorobenzene; ether; imidazoles; monochlorobenzenes | |
| fluconazole | fluconazole : A member of the class of triazoles that is propan-2-ol substituted at position 1 and 3 by 1H-1,2,4-triazol-1-yl groups and at position 2 by a 2,4-difluorophenyl group. It is an antifungal drug used for the treatment of mucosal candidiasis and for systemic infections including systemic candidiasis, coccidioidomycosis, and cryptococcosis. Fluconazole: Triazole antifungal agent that is used to treat oropharyngeal CANDIDIASIS and cryptococcal MENINGITIS in AIDS. | conazole antifungal drug; difluorobenzene; tertiary alcohol; triazole antifungal drug | environmental contaminant; P450 inhibitor; xenobiotic |
| isoconazole | 1-{2-[(2,6-dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl}imidazole : A member of the class of imidazoles that carries a 2-[(2,6-dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl group at position 1. isoconazole : A racemate comprising equimolar amounts of (R)- and (S)-isoconazole. A broad-spectrum antibacterial drug used (as its nitrate salt) for treatment of dermatomycoses. | dichlorobenzene; ether; imidazoles | |
| ketoconazole | 1-acetyl-4-(4-{[2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)piperazine : A dioxolane that is 1,3-dioxolane which is substituted at positions 2, 2, and 4 by imidazol-1-ylmethyl, 2,4-dichlorophenyl, and [para-(4-acetylpiperazin-1-yl)phenoxy]methyl groups, respectively. | dichlorobenzene; dioxolane; ether; imidazoles; N-acylpiperazine; N-arylpiperazine | |
| letrozole | nitrile; triazoles | antineoplastic agent; EC 1.14.14.14 (aromatase) inhibitor | |
| metyrapone | metyrapone : An aromatic ketone that is 3,3-dimethylbutan-2-one in which the methyl groups at positions 1 and 4 are replaced by pyridin-3-yl groups. A steroid 11beta-monooxygenase (EC 1.14.15.4) inhibitor, it is used in the diagnosis of adrenal insufficiency. Metyrapone: An inhibitor of the enzyme STEROID 11-BETA-MONOOXYGENASE. It is used as a test of the feedback hypothalamic-pituitary mechanism in the diagnosis of CUSHING SYNDROME. | aromatic ketone | antimetabolite; diagnostic agent; EC 1.14.15.4 (steroid 11beta-monooxygenase) inhibitor |
| miconazole | 1-[2-(2,4-dichlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl]imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 2,4-dichlorobenzyl group. miconazole : A racemate composed of equimolar amounts of (R)- and (S)-miconazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections. It inhibits the synthesis of ergosterol, a critical component of fungal cell membranes. Miconazole: An imidazole antifungal agent that is used topically and by intravenous infusion. | dichlorobenzene; ether; imidazoles | |
| tioconazole | 1-{2-[(2-chloro-3-thienyl)methoxy]-2-(2,4-dichlorophenyl)ethyl}imidazole : A member of the class of imidazoles that comprises 2-(2,4-dichlorophenyl)ethylimidazole carrying an additional (2-chloro-3-thienyl)methoxy substituent at position 2. tioconazole : A racemate comprising equimolar amounts of (R)- and (S)-tioconazole. | dichlorobenzene; ether; imidazoles; thiophenes | |
| testosterone propionate | androgen : A sex hormone that stimulates or controls the development and maintenance of masculine characteristics in vertebrates by binding to androgen receptors. Testosterone Propionate: An ester of TESTOSTERONE with a propionate substitution at the 17-beta position. | steroid ester | |
| staurosporine | indolocarbazole alkaloid; organic heterooctacyclic compound | apoptosis inducer; bacterial metabolite; EC 2.7.11.13 (protein kinase C) inhibitor; geroprotector | |
| fadrozole | Fadrozole: A selective aromatase inhibitor effective in the treatment of estrogen-dependent disease including breast cancer. | imidazopyridine | |
| azalanstat | azalanstat: inhibits lanosterol 14 alpha-demethylase, the enzyme which catalyzes the first step in conversion of lanosterol to cholesterol in mammals; structure given in first source | ||
| 1-benzylimidazole | 1-benzylimidazole: inhibits human thromboxane synthetase | ||
| dehydropregnenolone acetate | dehydropregnenolone acetate: structure | steroid ester | |
| methotrexate | dicarboxylic acid; monocarboxylic acid amide; pteridines | abortifacient; antimetabolite; antineoplastic agent; antirheumatic drug; dermatologic drug; DNA synthesis inhibitor; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; immunosuppressive agent | |
| abiraterone | 3beta-hydroxy-Delta(5)-steroid; 3beta-sterol; pyridines | antineoplastic agent; EC 1.14.99.9 (steroid 17alpha-monooxygenase) inhibitor | |
| metyrapol | metyrapol: reduction product of metyrapone with sodium borohydride; RN given refers to unlabeled cpd without isomeric designation | pyridines | |
| 17-(3-pyridyl)androsta-5,16-dien-3-one | 17-(3-pyridyl)androsta-5,16-dien-3-one: a steroidal inhibitor of cytochrome P450(17alpha)/C17-20 lyase; structure given in first source | ||
| ketoconazole | (2R,4S)-ketoconazole : A cis-1-acetyl-4-(4-{[2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)piperazine which dioxolane moiety has (2R,4S)-configuration. | cis-1-acetyl-4-(4-{[2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy}phenyl)piperazine | |
| posaconazole | aromatic ether; conazole antifungal drug; N-arylpiperazine; organofluorine compound; oxolanes; triazole antifungal drug; triazoles | trypanocidal drug | |
| 1-(phenylmethyl)benzimidazole | benzimidazoles | ||
| etomidate | etomidate : The ethyl ester of 1-[(1R)-1-phenylethyl]-1H-imidazole-5-carboxylic acid. It is an intravenous general anaesthetic with no analgesic activity. Etomidate: Imidazole derivative anesthetic and hypnotic with little effect on blood gases, ventilation, or the cardiovascular system. It has been proposed as an induction anesthetic. | ethyl ester; imidazoles | intravenous anaesthetic; sedative |
| 1-[(3-methylphenyl)methyl]benzimidazole | benzimidazoles | ||
| 4-fluoro-N-(3-pyridinyl)benzamide | carbonyl compound; organohalogen compound | ||
| 4-(1H-imidazol-1-ylmethyl)benzonitrile | benzenes; nitrile | ||
| vorozole | vorozole: structure given in first source; vorozole/R 83842 is ((+)/dextro-isomer), RN 129731-10-8; R 83839 ((-)/levo-isomer) | benzotriazoles | |
| orteronel | orteronel: non-steroidal 17,20-lyase inhibitor; structure in first source | ||
| abiraterone acetate | abiraterone acetate : A sterol ester obtained by formal condensation of the 3-hydroxy group of abiraterone with the carboxy group of acetic acid. A prodrug that is converted in vivo into abiraterone. Used for treatment of metastatic castrate-resistant prostate cancer. Abiraterone Acetate: An androstene derivative that inhibits STEROID 17-ALPHA-HYDROXYLASE and is used as an ANTINEOPLASTIC AGENT in the treatment of metastatic castration-resistant PROSTATE CANCER. | pyridines; sterol ester | antineoplastic agent; EC 1.14.99.9 (steroid 17alpha-monooxygenase) inhibitor; prodrug |
| orteronel | naphthalenecarboxamide | ||
| 3beta-hydroxy-17-(1h-benzimidazole-1-yl)androsta-5,16-diene | 3-hydroxy-17-(1H-benzimidazole-1-yl)androsta-5,16-diene: has antineoplastic activity; structure in first source | 3-hydroxy steroid | androgen |
| osilodrostat | Osilodrostat: an orally active aldosterone-synthase inhibitor | ||
| 5,8-dideazaisofolic acid | 5,8-dideazaisofolic acid: structure given in first source | ||
| cb 3705 | CB 3705: inhibitor of dihydrofolate reductase & thymidylate synthetase | ||
| (5)n,(8)n-deaza-(10)-n-methylfolate | (5)N,(8)N-deaza-(10)-N-methylfolate: structure |