| coumarin hydroxylase | <enzyme> Different preparations hydroxylate at position 3 and position 7; if cytochrome p-450coh is mutated at position 209, its substrate specificity is changed from coumarin hydroxylation to steroid hydroxylation Registry number: EC 1.14.99.- Synonym: cytochrome p-450coh, cytochrome p-4502a-5, cyp2a-5 gene product, coumarin 7-hydroxylase, cytochrome p-450 2a6, cyp2a6, cytochrome p-450 2a3, cyp2a3, p450 2a5, dhea hydroxylase, cyp2a5 (26 Jun 1999) |
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| cymA hydroxylase reductase | <enzyme> Flavoprotein electron transport reductase from pseudomonas aureofaciens; genbank u86603 Registry number: EC 1.- Synonym: p-cymene methyl hydroxylase reductase, cyma gene product (26 Jun 1999) |
| cytochrome P-450-dependent digitoxin 12beta-hydroxylase | <enzyme> Isolated from digitalis lantata cell cultures Registry number: EC 1.14.99.- Synonym: digitoxin 12beta-hydroxylase (26 Jun 1999) |
| salicylic acid 5-hydroxylase | <enzyme> Catalyses conversion of salicylic acid to gentisic acid Registry number: EC 1.14.- Synonym: salicylate 5-hydroxylase (26 Jun 1999) |
| progesterone-6-hydroxylase | <enzyme> Cytochrome p-450 2c3 with valine at position 364 which confers 6beta-hydroxylase activity; see also record for cyp2c3 gene product Registry number: EC 1.14.99.- Synonym: progesterone 6beta-hydroxylase, cytochrome p450 2c3v (26 Jun 1999) |
| prolyl hydroxylase | Specific proline residues on the amino side of a glycine residue in collagen become hydroxylated at C4, before the polypeptides become helical, by the activity of prolyl hydroxylase. This enzyme has a ferrous ion at the active site and a reducing agent such as ascorbate is necessary to maintain the iron in the ferrous state. The presence of hydroxyproline is essential to produce stable triple helical tropocollagen, hence the problems caused by ascorbate deficiency in scurvy. This unusual amino acid is also present in considerable amounts in the major glycoprotein of primary plant cell walls (see HRGP). (18 Nov 1997) |
| 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) |
| hexobarbital hydroxylase | <enzyme> Hexobarbital goes to 3-hydroxyhexobarbital Registry number: EC 1.14.- (26 Jun 1999) |
| hydroxycholesterol 25-hydroxylase | <enzyme> Acts on 22r-hydroxycholesterol and 20s-hydroxycholesterol Registry number: EC 1.14.99.- Synonym: 25-hydroxylase (26 Jun 1999) |
| hydroxylase | <enzyme> A type of enzyme which adds -OH groups to its substrate during hydroxylation reactions by attaching oxygen atoms to it. (09 Oct 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 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) |
| steroid 15-beta-hydroxylase | <enzyme> Contains p-450 and ferredoxin; from bacillus megaterium Registry number: EC 1.14.99.- Synonym: cytochrome p-450 15 beta-hydroxylase, p-450 (15-beta), steroid-15 beta-monooxygenase, cytochrome p-450meg, cytochrome p4502c12, cyp2c12 protein (26 Jun 1999) |
| steroid 19-hydroxylase | <enzyme> Enzyme from adrenal mitochondria; forms 19-hydroxy-11-deoxycorticosterone Registry number: EC 1.14.13.- Synonym: 19-hydroxysteroid hydroxylase, deoxycorticosterone 11-19-hydroxylase (26 Jun 1999) |
| steroid (23R)-hydroxylase | <enzyme> Increased (23r)-hydroxylase activity in patients with cerebrotendinous xanthomatosis, an inborn error of metabolism in bile acid synthesis resulting in (23r)-hydroxylation of bile acids Registry number: EC 1.14.99.- Synonym: bile acid (23r)-hydroxylase, bile alcohol (23r)-hydroxylase (26 Jun 1999) |