| estradiol dehydrogenases | <enzyme> Enzymes that catalyze the oxidation of estradiol at the 17-hydroxyl group in the presence of NAD+ or NADP+ to yield estrone and NADH or NADPH. The 17-hydroxyl group can be in the alpha- or beta-configuration.2 Chemical name: Estradiol-17 beta:NAD(P)+ 17-oxidoreductase Registry number: EC 1.1.1.62 (12 Dec 1998) |
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| 17-hydroxysteroid dehydrogenases | <enzyme> A class of enzymes that catalyses the oxidation of 17-hydroxysteroids to 17-ketosteroids. Registry number: EC 1.1.- (12 Dec 1998) |
| 20-hydroxysteroid dehydrogenases | <enzyme> Catalyze the oxidation of 20-hydroxysteroids to 20-ketosteroids. Registry number: EC 1.1.- (12 Dec 1998) |
| 3-hydroxysteroid dehydrogenases | <enzyme> Catalyze the oxidation of 3-hydroxysteroids to 3-ketosteroids. Registry number: EC 1.1.- (12 Dec 1998) |
| formate dehydrogenases | <enzyme> Flavoproteins that catalyze reversibly the reduction of carbon dioxide to formate. Many compounds can act as acceptors, but the only physiologically active acceptor is NAD. The enzymes are active in the fermentation of sugars and other compounds to carbon dioxide and are the key enzymes in obtaining energy when bacteria are grown on formate as the main carbon source. They have been purified from bovine blood. Chemical name: Formate:NAD+ oxidoreductase Registry number: EC 1.2.1.2 (12 Dec 1998) |
| acetate-CoA ligase | <enzyme> An enzyme that catalyses the formation of CoA derivatives from ATP, acetate, and CoA to form AMP, pyrophosphate, and acetyl CoA. It acts also on propionates and acrylates. Chemical name: Acetate:CoA ligase (AMP-forming) Registry number: EC 6.2.1.1 (12 Dec 1998) |
| acetate-succinate CoA-transferase | <enzyme> Tritichomonas and trichomonas enzyme converts acetyl-CoA and succinate to acetate and succinyl-CoA Registry number: EC 2.8.3.- Synonym: acetate-succinate coenzyme a-transferase (26 Jun 1999) |
| acetoacetyl-CoA | Intermediate in the oxidation of fatty acids and in the formation of ketone bodies; also formed from two molecules of acetyl-CoA; major role is condensation with acetyl-CoA to form the important beta-hydroxy-beta-methylglutaryl-CoA. Synonym: acetoacetyl-coenzyme A. (05 Mar 2000) |
| acetoacetyl-CoA reductase | An oxidoreductase catalyzing interconversion of a 3-oxoacyl-CoA and NADPH, and the corresponding d-3-hydroxyacyl-CoA, and NADP+. A step in fatty acid synthesis. (05 Mar 2000) |
| acetoacetyl-CoA synthetase | <enzyme> Catalyses the conversion of acetoacetate and CoA in the presence of ATP to yield AMP, pyrophosphate and acetoacetyl-CoA; the latter is the first intermediate in cholesterogenesis; also acts more slowly on l-3-hydroxybutanoate Registry number: EC 6.2.1.16 Synonym: acetoacetyl-CoA ligase, acetoacetate-CoA ligase, acetoacetyl-coenzyme a synthetase (26 Jun 1999) |
| acetoacetyl-CoA thiolase | An acetyltransferase forming acetoacetyl-CoA from two molecules of acetyl-CoA, releasing one CoA. A key step in ketogenesis and sterol synthesis. Synonym: acetoacetyl-CoA thiolase, acetyl-CoA thiolase, thiolase. (05 Mar 2000) |
| acetyl-CoA | <enzyme> Condensation product of coenzyme A and acetic acid, symbolised as CoAS~COCH3; intermediate in transfer of two-carbon fragment, notably in its entrance into the tricarboxylic acid cycle and in fatty acid synthesis. This coenzyme plays a huge role in intermediary metabolism, in which cells synthesise, break down or use nutrient molecules for energy production, growth, etc. Acetyl-coenzyme A synthase is found in bacteria and plants and catalyses the reaction in which acetate enters metabolic pathways and forms acetyl-coenzyme A. Synonym: acetyl-coenzyme A, active acetate. (05 Mar 2000) |
| acetyl-CoA-1-alkyl-2-lyso-sn-glycero-3-phosphocholine acetyltransferase | <enzyme> Transfers acetate from acetyl CoA to the sn-2-position of 1-alkyl-2-lyso-glycerophosphocholine, forming the substrate for 1-alkylglycerophosphocholine acetyltransferase (EC 2.3.1.67) Registry number: EC 2.3.1.- Synonym: acopc acetyltransferase, 1-alkyl-2-lyso-sn-glycero-3-phosphocholine-acetyl CoA acetyltransferase, alkyllyso-gp-acetyl-CoA acetyltransferase, acetyl-coenzyme a-1-alkyl-2-lyso-sn-glycero-3-phosphocholine acetyltransferase (26 Jun 1999) |
| acetyl-CoA acetyltransferase | An acetyltransferase forming acetoacetyl-CoA from two molecules of acetyl-CoA, releasing one CoA. A key step in ketogenesis and sterol synthesis. Synonym: acetoacetyl-CoA thiolase, acetyl-CoA thiolase, thiolase. (05 Mar 2000) |
| acetyl-CoA acylase | <enzyme> An enzyme that catalyses reversibly the hydrolysis of acetyl-CoA to yield CoA and acetate. The enzyme is involved in the oxidation of fatty acids. Chemical name: Acetyl-CoA hydrolase Registry number: EC 3.1.2.1 (12 Dec 1998) |