| delta5-3beta-hydroxysteroid acyltransferase | <enzyme> Forms esters of palmitate, oleate, linoleate, stearate and myristate with pregnenolone or dehydroepiandrosterone; from rat brain microsomes Registry number: EC 2.3.1.- Synonym: pregnenolone o-acyltransferase, dehydroepiandrosterone o-acyltransferase (26 Jun 1999) |
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| delta(5)-3 beta-hydroxysteroid dehydrogenase | <enzyme> Converts dehydroepiandrosterone to delta-4-androstene-3,17-dione Registry number: EC 1.1.1.- Synonym: dbhdase, 3 beta-hydroxy-5-ene-steroid dehydrogenase, steroid-delta(5)-3-ol dehydrogenase (26 Jun 1999) |
| 11 beta-hydroxysteroid dehydrogenase | <enzyme> Cortisol or cortisone have been used as substrates Registry number: EC 1.1.1.146 Synonym: corticosteroid 11-oxidoreductase, corticosteroid 11-reductase, cortisone-11-oxidoreductase, 11-hydroxysteroid dehydrogenase, 11beta-dehydrogenase, 11-oxoreductase (26 Jun 1999) |
| 12 beta-hydroxysteroid dehydrogenase | <enzyme> Isolated from clostridium paraputrificum; nadp-dependent; reduces 12-keto groups in conjugated and unconjugated acids and oxidised a 12 beta-hydroxy function Registry number: EC 1.1.1.- Synonym: 12beta-hydroxysteroid dehydrogenase (26 Jun 1999) |
| 3(17)-hydroxysteroid dehydrogenase | <enzyme> From cytosol of female rabbit kidney; acts on both androgen and oestrogen substrates; this is specific for alpha-hydroxysteroids, for beta-hydroxy steroids see EC 1.1.1.51 Registry number: EC 1.1.1.209 Synonym: 3(17)alpha-hydroxysteroid dehydrogenase, 17alpha-hsdh, 17alpha-hydroxysteroid dehydrogenase, 17-hydroxysteroid dehydrogenase (26 Jun 1999) |
| 3 alpha-hydroxysteroid-5 beta-oxidoreductase | <enzyme> From digitalis lanata; specific for 5 beta-pregnan-3-ones; does not act on 5 alpha-pregnane-3-ones or delta 4/delta 5-pregnenes Registry number: EC 1.1.1- Synonym: 3a ohs oxidoreductase (26 Jun 1999) |
| 3 beta,20 alpha-hydroxysteroid oxidoreductase | <enzyme> From calf foetal red blood cells; 17 beta-hydroxy-5 alpha-androstan-3-one and progesterone can act as substrates of 3 beta and 20 alpha reductase activities, respectively Registry number: EC 1.1.1.- Synonym: 3,20-hs oxidoreductase (26 Jun 1999) |
| 3 beta-hydroxysteroid oxidoreductase-delta(5) 3-ketosteroid isomerase | <chemical> System found in breast cancers; consists of EC 1.1.1.145 (progesterone reductase) and EC 5.3.3.1 (steroid delta-isomerase)) Synonym: 3 ohsteroid dehydrogenase-isomerase, delta 5-3 beta hydroxysteroid dehydrogenase-isomerase, 3 beta-hydroxysteroid dehydrogenase-isomerase, 3 beta-hydroxysteroid dehydrogenase-delta(5)-delta(4)-isomerase, 3 beta-hydroxysteroid dehydrogenase-5--4-ene-isomerase, 3-beta-hydroxysteroid dehydrogenase-delta(5-4)-isomerase, 3 beta hydroxysteroid dehydrogenase-delta5-delta4-isomerasease, 3 beta-ol dehydrogenase-delta(4)-delta(5) isomerase, 3 beta-hydroxy-5-ene steroid dehydrogenase-delta 5-delta 4 isomerase (26 Jun 1999) |
| 3b-hydroxysteroid sulfate sulfatase | <enzyme> An enzyme, found in most mammalian tissues, that is capable of hydrolyzing the sulfate ester bonds of a variety of sulfated sterols; a deficiency of this enzyme will result in X-linked ichthyosis. (05 Mar 2000) |
| 3 (or 17)-beta-hydroxysteroid dehydrogenase | <enzyme> Acts on both 3 beta or 17 beta hydroxysteroids; 17 beta type 1 is probably estradiol dehydrogenases; for 3 or 17 alpha-hydroxysteroids see EC 1.1.1.209; was mapped to testosterone dehydrongenases (85-93) (see under 17-hydroxysteroid dehydrogenases (85-90); on-line search 17-hydroxysteroid dehydrogenases (85-93), index medicus search testosterone dehydrogenases (91-93), 17-hydroxysteroid dehydrogenases (85-90) Registry number: EC 1.1.1.51 Synonym: 3 beta,17 beta-hydroxysteroid dehydrogenase, 3,17-beta-hsdase, 17beta-hydroxysteroid dehydrogenase, 17beta hsd1 (26 Jun 1999) |
| 5 alpha-3 alpha-hydroxysteroid dehydrogenase | <enzyme> Androsterone can be substrate Registry number: EC 1.1.1.50 Synonym: 3 alpha-hydroxysteroid dehydrogenase, 3 alpha-hydroxysteroid oxidoreductase, 3 oc-hydroxysteroid dehydrogenase (26 Jun 1999) |
| 5alpha-androstane-3alpha-hydroxysteroid dehydrogenase | <enzyme> Converts dihydrotestosterone to 5alpha-androstan-3-alpha-17beta-diol Registry number: EC 1.1.1.- Synonym: 5alpha-ane-3alpha-hsdase (26 Jun 1999) |
| 5alpha-androstane-3beta-hydroxysteroid dehydrogenase | <enzyme> Converts dihydrotestosterone to 5alpha-androstan-3,17-beta-diol Registry number: EC 1.1.1.- Synonym: 5alpha-ane-3beta-hsdase (26 Jun 1999) |
| 5 alpha-dihydroprogesterone 3 alpha-hydroxysteroid oxidoreductase | <enzyme> Catalyses conversion of 5 alpha-dihydroprogesterone to 3 alpha -hydroxy-5 alpha-pregnane-20-one Registry number: EC 1.1.1.- Synonym: 5-dp-3 alpha-hso, NADPH-5 alpha-dihydroprogesterone 3 alpha-hydroxysteroid oxidoreductase, alpha-hsor (26 Jun 1999) |
| 7 beta-hydroxysteroid dehydrogenase | <enzyme> Nadp-dependent Registry number: EC 1.1.1.- Synonym: 7beta-hos dh, 7beta-hydroxysteroid dehydrogenase (26 Jun 1999) |