| CAT | California Achievement Test; capillary agglutination test; catalase; cataract; catecholamine; Childr... |
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| ACAT | acetocoenzyme A acetyltransferase; automated computerized axial tomography |
| ChAC | choline acetyltransferase |
| ChAT | choline acetyltransferase |
| KAT | kanamycin acetyltransferase |
| AANAT | Arylalkylamine N-acetyltransferase |
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| CAT | Carnitine acetyltransferase |
| ChA | Choline acetyltransferase |
| ChAC | Choline acetyltransferase |
| ChAT | Choline acetyltransferase activity |
| ornithine acetyltransferase | <enzyme> An enzyme catalyzing transfer of an acetyl group from N2-acetylornithine to l-glutamate forming l-ornithine and N-acetyl-l-glutamate, an activator of the urea cycle. Synonym: ornithine acetyltransferase. (05 Mar 2000) |
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| N(5)-(carboxyethyl)ornithine synthase | <enzyme> From lactococcus lactis k1; NADPH-dependent; catalyses the synthesis of n5-ceo from pyruvic acid and l-ornithine Registry number: EC 1.5.1.24 Synonym: nceo synthase (26 Jun 1999) |
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| ornithine | <amino acid> Is made from the amino acid arginine and in turn is a precursor to form glutamic acid, citruline and proline. Ornithine's chief therapeutic value lies in its involvement in the urea cycle and its ability to enhance liver function, protect the liver and detoxify harmful substances. It has been used in the treatment of hepatic coma states. It also helps release a growth hormone that metabolises excess body fat when combined with arginine. This growth hormone is also an immune stimulant. In animal studies arginine and ornithine have improved immune responses to bacteria, viruses and tumour cells. It is found in milk products and meat, especially chicken. It may cause insomnia and is contraindicated for schizophrenics. (22 May 1997) |
| ornithine 5,4-aminomutase | <enzyme> EC 5.4.3.1 has been deleted; reaction was due to a mixture of EC 5.1.1.12 and EC 5.4.3.5 Registry number: EC 5.4.3.5 Synonym: d-ornithine 4,5-aminomutase (26 Jun 1999) |
| ornithine carbamoyltransferase | <enzyme> An enzyme of the transferase class that catalyses the reaction of carbamoyl phosphate and l-ornithine to yield orthophosphate and l-citrulline. The enzyme occurs in the liver. The reaction is a part of the urea cycle. Genetic deficiency of the enzyme, an x-linked trait, impairs urea formation and produces hyperammonaemia. Chemical name: Carbamoyl-phosphate:L-ornithine carbamoyltransferase Registry number: EC 2.1.3.3 (12 Dec 1998) |
| ornithine cycle | The metabolic pathway isfound in vertebrates and takes place in theliver, in it, urea is synthesised from amino acids and carbon dioxide. (09 Oct 1997) |
| ornithine d-aminotransferase | <enzyme> An enzyme that will reversibly catalyze the reaction of alpha-ketoglutarate and l-ornithine to form l-glutamate and l-glutamate gamma-saemialdehyde; a deficiency of this enzyme will result in gyrate atrophy of the choroid and retina. Synonym: ornithine transaminase. (05 Mar 2000) |
| ornithine decarboxylase | <enzyme> The enzyme that converts ornithine to putrescine (dibasic amine) by decarboxylation. Rate limiting in the synthesis of the polyamines spermidime and spermine that regulate DNA synthesis. (18 Nov 1997) |
| ornithine-oxo-acid transaminase | <enzyme> A pyridoxal phosphate enzyme that catalyses the formation of glutamate gamma-saemialdehyde and an l-amino acid from l-ornithine and a 2-keto-acid. Chemical name: L-Ornithine:2-oxo-acid aminotransferase Registry number: EC 2.6.1.13 (12 Dec 1998) |
| ornithine transaminase | <enzyme> An enzyme that will reversibly catalyze the reaction of alpha-ketoglutarate and l-ornithine to form l-glutamate and l-glutamate gamma-saemialdehyde; a deficiency of this enzyme will result in gyrate atrophy of the choroid and retina. Synonym: ornithine transaminase. (05 Mar 2000) |
| ornithine transcarbamoylase | <enzyme> An enzyme of the transferase class that catalyses the reaction of carbamoyl phosphate and l-ornithine to yield orthophosphate and l-citrulline. The enzyme occurs in the liver. The reaction is a part of the urea cycle. Genetic deficiency of the enzyme, an x-linked trait, impairs urea formation and produces hyperammonaemia. Chemical name: Carbamoyl-phosphate:L-ornithine carbamoyltransferase Registry number: EC 2.1.3.3 (12 Dec 1998) |
| 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:alpha-glucosaminide acetyltransferase | <enzyme> An enzyme involved in the synthesis of certain carbohydrate moieties on proteins. A deficiency of this enzyme leads to mucopolysaccharidosis type III C. (05 Mar 2000) |
| acetyl CoA-(beta-aminoethyl)-L-cysteine omega-N-acetyltransferase | <enzyme> Forms s-(beta-n-acetyl-aminoethyl)-l-cysteine Registry number: EC 2.3.1.- Synonym: acoac-acetyltransferase, acetyl coenzyme a-(beta-aminoethyl)-l-cysteine omega-n-acetyltransferase (26 Jun 1999) |
| acetyl-CoA c-acetyltransferase | <enzyme> An enzyme that catalyses the reversible formation of acetoacetyl-CoA from two molecules of acetyl-CoA. Chemical name: Acetyl-CoA:acetyl-CoA C-acetyltransferase Registry number: EC 2.3.1.9 (12 Dec 1998) |
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