| glutamate decarboxylase | <enzyme> A pyridoxal-phosphate protein that catalyses the alpha-decarboxylation of l-glutamic acid to form gamma-aminobutyric acid and carbon dioxide. The enzyme is found in bacteria and in invertebrate and vertebrate nervous systems. It is the rate-limiting enzyme in determining gaba levels in normal nervous tissues. The brain enzyme also acts on l-cysteate, l-cysteine sulfinate, and l-aspartate. Chemical name: L-Glutamate-1-carboxy-lyase Registry number: EC 4.1.1.15 (12 Dec 1998) |
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| glutamate dehydrogenase | <enzyme> An enzyme that catalyses the conversion of l-glutamate and water to 2-oxoglutarate and nh3 in the presence of NAD+. Chemical name: L-Glutamate:NAD+ oxidoreductase (deaminating) Registry number: EC 1.4.1.2 (12 Dec 1998) |
| glutamate dehydrogenase (NADP+) | <enzyme> An enzyme that catalyses the conversion of l-glutamate, h2o, and NADP+ to 2-oxoglutarate, nh3, and NADPH. Chemical name: L-Glutamate:NADP+ oxidoreductase (deaminating) Registry number: EC 1.4.1.4 (12 Dec 1998) |
| glutamate dehydrogenases | Enzymes that catalyze the reaction of l-glutamate, H2O, and NAD+ (or NADP+ in some cases) producing alpha-ketoglutarate (2-oxoglutarate), ammonia, and NADH; in mammals, this is the prime contributor to oxidative deamination. Synonym: glutamic acid dehydrogenases. (05 Mar 2000) |
| glutamate formiminotransferase | <enzyme> Also catalyses formyl transfer from 5-formyltetrahydrofolate to l-glutamate (reaction formerly listed as EC 2.1.2.6) Registry number: EC 2.1.2.5 Synonym: formimino-l-glutamate tetrahydrofolate 5-formiminotransferase, formimino transferase, formiminotetrahydrofolate transferase, glutamate formyltransferase (26 Jun 1999) |
| glutamate gamma-saemialdehyde | -OOCCH(NH3)+CH2CH2C HO;an intermediate in l-proline and l-ornithine metabolism; becomes elevated in type II hyperprolinaemia. (05 Mar 2000) |
| glutamate permease | <chemical> (26 Jun 1999) |
| glutamate racemase | <enzyme> Catalyses the conversion of l-glutamate to d-glutamate; muri protein was isolated from e. Coli Registry number: EC 5.1.1.3 Synonym: muri protein, muri gene product (26 Jun 1999) |
| glutamate receptor | <physiology> See amino acid receptor superfamily. Glutamate receptors are implicated in many important brain functions including long-term potentiation (LTP). at least 4 major glutamate gated ion channel subtypes are presently distinguished on pharmacological grounds, named after their most selective agonists: N methyl D aspartate (NMDA implicated in memory and learning, neuronal cell death, ischaemia and epilepsy), kainic acid (KA), quisqualate/AMPA and L 2 amino 4 phosphobutyrate (APB). A fifth subtype (APCD) trans 1 amino cyclopentane 1,3 dicarboxylate is a G-protein coupled receptor. (18 Nov 1997) |
| glutamate-saemialdehyde dehydrogenase | <enzyme> Converts 5-glutamyl phosphate to glutamate 5-saemialdehyde in the presence of NADPH; see also glutamic-gamma-saemialdehyde dehydrogenase which catalyses the oxidation of 1-pyrroline-5-carboxylate to l-glutamate in the presence of nad Registry number: EC 1.2.1.41 Synonym: beta-glutamylphosphate reductase, glutamate 5-saemialdehyde dehydrogenase, gamma-glutamylphosphate reductase, proa gene product (26 Jun 1999) |
| glutamate synthase | <enzyme> An enzyme that catalyses the formation of 2 molecules of glutamate from glutamine plus alpha-ketoglutarate in the presence of NADPH. Chemical name: L-Glutamate:NADP+ oxidoreductase (transaminating) Registry number: EC 1.4.1.13 (12 Dec 1998) |
| glutamate-trna ligase | <enzyme> An enzyme that activates glutamic acid with its specific transfer RNA. Chemical name: L-Glutamate:tRNA(Glu) ligase (AMP-forming) Registry number: EC 6.1.1.17 (12 Dec 1998) |
| monosodium glutamate | <chemical> A commonly used flavour enhancer in food (common in Chinese food). Some people can develop a hypersensitivity to MSG. See: Chinese restaurant syndrome. (27 Sep 1997) |
| component E, glutamate mutase | <chemical> The large subunit of glutamate mutase; from clostridium tetanomorphum; has 485 amino acid residues; mw 53,708 da; has been sequenced Synonym: mute gene product, clostridium, mute protein, clostridium (26 Jun 1999) |
| component S, glutamate mutase | <chemical> Component s of the coenzyme b12-dependent glutamate mutase from clostridium cochlearium; mw 15 kD; amino acid sequence given in first source Synonym: glms gene product, muts gene product (clostridium) (26 Jun 1999) |