| dehydratase | A subclass (EC 4.2.1) of lyases (hydro-lyases) that remove H and OH as H2O from a substrate, leaving a double bond, or add a group to a double bond by the elimination of water from two substances to form a third; synthase is sometimes used when the synthetic aspect of the reaction is emphasized. Some trivial names of enzymes in this subclass bear the generic term hydratase, emphasizing the reverse reaction. (05 Mar 2000) |
|---|---|
| D-serine dehydratase | <enzyme> Do not confuse with l-serine dehydratase (mh) Chemical name: d-serine hydro-lyase (deaminating) Registry number: EC 4.2.1.14 Synonym: d-serine deaminase (26 Jun 1999) |
| D-(-)-tartrate dehydratase | <enzyme> From rhodopseudomonas spheroides; does not act on l-(+)-tartrate; forms oxaloacetate Registry number: EC 4.2.1.- Synonym: d-(-)-tartrate hydrolyase (26 Jun 1999) |
| dTDPglucose 4,6-dehydratase | <enzyme> Rfbb is also a phosphomanno-mutase; has been sequenced; genbank y10907 Registry number: EC 4.2.1.46 Synonym: tdp d-glucose oxidoreductase, thymidine-diphospho-d-glucose 4,6-dehydratase, rfbb protein, deltatdp-glucose dehydratase, tyla2 gene product, gdh gene product, rfbb gene product, mtmd gene product (26 Jun 1999) |
| D-xylo-aldonate dehydratase | <enzyme> Forms 2-keto-3-deoxy-d-xylonate (d-pentulosonic acid) Registry number: EC 4.2.1.- Synonym: d-xylonate dehydratase (26 Jun 1999) |
| 16 alpha-hydroxyprogesterone dehydratase | <enzyme> From rat intestinal anaerobic bacteria; forms 16-dehydroprogesterone Registry number: EC 4.2.1.- Synonym: 16 alpha-dehydratase (26 Jun 1999) |
| lactate dehydratase | <enzyme> From cell extracts of clostridium propionicum; catalyses the dehydration of (r)-lactate to acrylate Registry number: EC 4.2.1.54 Synonym: lactyl CoA dehydratase, lactyl coenzyme a dehydratase, lactoyl-CoA dehydratase (26 Jun 1999) |
| 2-hydroxyglutaryl-CoA dehydratase | <enzyme> From acidaminococcus fermentans; catalyses dehydration of (r)-2-hydroxyglutarate in the presence of acetyl-CoA and glutaconate CoA transferase; forms glutaconyl-CoA, an iron-sulfur enzyme. Registry number: EC 4.2.1.- Synonym: 2-hydroxyglutaryl-coenzyme a dehydratase (26 Jun 1999) |
| 3-dehydroshikimate dehydratase | <enzyme> Third enzyme in neurospora crass quinic acid catabolic pathway Registry number: EC 4.2.1.- Synonym: quic protein, quic gene product (26 Jun 1999) |
| 3-phenylserine dehydratase | <enzyme> Catalyses deamination of l-threo-3-phenylserine to yield phenylpyruvate and ammonia; partial amino acid sequence given in first source Registry number: EC 4.2.1.- Synonym: l-threo-phenylserine dehydratase (26 Jun 1999) |
| 4-hydroxybutyryl-CoA dehydratase | <enzyme> Forms vinylacetyl-CoA from 4-hydroxybutyryl-CoA Registry number: EC 4.2.1.- Synonym: gamma-hydroxybutyryl-CoA dehydratase (26 Jun 1999) |
| 5-hydroxyvaleryl-CoA dehydratase | <enzyme> Contains fad; bifunctional enzyme which catalyses reversible dehydration of 5-hydroxyvaleryl-CoA to 4-pentenoyl-CoA Registry number: EC 4.2.1.- Synonym: 5hvc-dehydratase, 5-hydroxyvaleryl-CoA dehydratase-dehydrogenase (26 Jun 1999) |
| 7,2'-dihydroxy-4'-methoxyisoflavanol dehydratase | <enzyme> Catalyses loss of water and closure of an ether ring to form medicarpin Registry number: EC 4.2.1.- Synonym: 2',7-dihydroxy-4'-methoxyisoflavanol dehydratase, dmi dehydratase (26 Jun 1999) |
| (S)-2-methylmalate dehydratase | Registry number: EC 4.2.1.34 Synonym: (+)-citramalate hydro-lyase, mesaconase, mesaconate hydratase (26 Jun 1999) |
| l-serine dehydratase | <enzyme> An enzyme of the lyase class that catalyses the dehydration and deamination of l-serine to form pyruvate. Chemical name: L-Serine hydro-lyase (deaminating) Registry number: EC 4.2.1.13 (12 Dec 1998) |