| hydroperoxide dehydratase | <enzyme> Catalyses the formation of 12,13-epoxy-9,11,15-octadecatrienoic acid from 13-hydroperoxy-9,11,15-octadecatrienoic acid ; also acts on 13-hydroperoxy-9,11-octadecadienoic acid Registry number: EC 4.2.1.- Synonym: hydroperoxide dehydrase (26 Jun 1999) |
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| D-3-hydroxyacyl CoA dehydratase | <enzyme> From rat liver peroxisomes; catalyses the epimerization of d-3-hydroxyacyl CoA by the dehydration of 3-hydroxyacyl-CoA to 2-trans-enoyl-CoA followed by the hydration of the latter enzyme to l-3-hydroxyacyl-CoA by enoyl-CoA hydratase (EC 4.2.1.17); is not active on 2-cis-enoyl CoA; consider also EC 4.2.1.74 Registry number: EC 4.2.1.- Synonym: d-3-hydroxyacyl coenzyme a dehydratase, beta-hydroxyacyl-CoA dehydratase (26 Jun 1999) |
| d-aminolevulinate dehydratase | <enzyme> An enzyme that catalyses the formation of porphobilinogen from two molecules of 5-aminolevulinic acid. Chemical name: 5-Aminolevulinate hydro-lyase (adding 5-aminolevulinate and cyclizing) Registry number: EC 4.2.1.24 (12 Dec 1998) |
| d-aminolevulinate dehydratase porphyria | An inherited disorder in which there is a deficiency of porphobilinogen synthase; d-aminolevulinate levels are elevated, leading to neurological disturbances. Synonym: porphobilinogen synthase porphyria. (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) |
| threonine dehydratase | <enzyme> A pyridoxal-phosphate protein that catalyses the deamination of threonine to 2-ketobutyrate and ammonia. The role of this enzyme can be biosynthetic or biodegradative. In the former role it supplies 2-ketobutyrate required for isoleucine biosynthesis, while in the latter it is only involved in the breakdown of threonine to supply energy. Chemical name: L-Threonine hydro-lyase (deaminating) Registry number: EC 4.2.1.16 (12 Dec 1998) |
| 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) |