| ethinylestradiol-17 alpha sulfotransferase | <enzyme> Responsible for the sulphation of 17 alpha-ethinylestradiol; found in human liver cytosol; mol mass 33-kD; not a phenol- or monoamine-sulphating phenolsulphotransferase nor a hydroxysteroid sulphotransferase Registry number: EC 2.8.2.- Synonym: 17 alpha-ethinyloestradiol sulphotransferase, ee(2) st, ee2 st (26 Jun 1999) |
|---|---|
| tyrosine-ester sulfotransferase | <enzyme> Also acts on phenols and organic hydroxylamines Registry number: EC 2.8.2.9 Synonym: arylsulfotransferase iv (26 Jun 1999) |
| flavonol 3-sulfotransferase | <enzyme> Acts on quercetin; isorhamnetin; rhamnetin and kaempferol Registry number: EC 2.8.2.25 Synonym: quercetin 3-sulfotransferase (26 Jun 1999) |
| flavonol 4'-sulfotransferase | <enzyme> Adds a second sulfate to various flavonol 3-sulfates Registry number: EC 2.8.2.- (26 Jun 1999) |
| 6-hydroxymelatonin sulfotransferase | <enzyme> Catalyses the sulfation of 6-hydroxymelatonin (6hm) to produce 6-sulfatoxymelatonin (6hms) Registry number: EC 2.8.2.- Synonym: 6hm sulfotransferase, 6hmst, 6hmst I, 6hmst II (26 Jun 1999) |
| anabolic steroid | <endocrinology> A type of steroid hormone that stimulates the synthesis of protein. Anabolic steroids are compounds which stimulate the body into anabolism. This process involves the building of complex compounds from smaller simpler ones (for example proteins are built from amino acids). This process requires energy. (13 Nov 1997) |
| receptors, steroid | Proteins found usually in the cytoplasm or nucleus that specifically bind steroid hormones and trigger changes influencing the behaviour of cells. The steroid receptor-steroid hormone complex regulates the transcription of specific genes. (12 Dec 1998) |
| gonadal steroid-binding globulin | A protein that transports 65% of the testosterone in plasma. Synonym: sex steroid-binding globulin. (05 Mar 2000) |
| saturated steroid 6 alpha-hydroxylase | <enzyme> Acts on 5 alpha-androstane-3 beta,17 beta-diol and 5 alpha-pregnan-3 beta-ol-20-one; does not require cytochrome p-450 Registry number: EC 1.14.99.- Synonym: sat steroid 6alpha-hydroxylase (26 Jun 1999) |
| sex steroid-binding globulin | A protein that transports 65% of the testosterone in plasma. Synonym: sex steroid-binding globulin. (05 Mar 2000) |
| steroid | A group name for lipids that contain a hydrogenated cyclopentanoperhydrophenanthrene ring system. Some of the substances included in this group are progesterone, adrenocortical hormones, the gonadal hormones, cardiac aglycones, bile acids, sterols (such as cholesterol), toad poisons, saponins and some of the carcinogenic hydrocarbons. (18 Nov 1997) |
| steroid 11-alpha-hydroxylase | <enzyme> Converts 11-deoxycortisol to 11-alpha cortisol (the 11-alpha isomer of hydrocortisone) Registry number: EC 1.14.99.- (26 Jun 1999) |
| steroid 11 beta-monooxygenase | <enzyme> A steroid hydroxylase system found in adrenal tissues. It catalyses the 11-hydroxylation of steroids in the presence of molecular oxygen and consists of an NADPH-specific flavoprotein, a non-haem iron protein, and cytochrome p-450. Its deficiency is a cause of congenital adrenal hyperplasia (adrenal hyperplasia, congenital). Chemical name: Steroid, reduced-adrenal-ferredoxin:oxygen oxidoreductase (11 beta-hydroxylating) Registry number: EC 1.14.15.4 (12 Dec 1998) |
| steroid 12-monooxygenase | <enzyme> A steroid hydroxylase found in liver microsomes. It catalyses the 12-hydroxylation of steroids in the presence of NADPH, cytochrome p-450, and molecular oxygen. It is an important enzyme in the synthesis of cholic acid from cholesterol in the liver. Chemical name: Steroid, hydrogen-donor:oxygen oxidoreductase (12-alpha-hydroxylating) Registry number: EC 1.14.99.- (12 Dec 1998) |
| steroid 14-alpha-hydroxylase | <enzyme> From induced vegetative cell cultures of mucor piriformis; hydroxylates progesterone to 14-alpha-hydroxyprogesterone in the presence of NADPH and oxygen Registry number: EC 1.14.13.- Synonym: progesterone 14-alpha-hydroxylase (26 Jun 1999) |