| GRINB | glutamate receptor, ionotropic, N-methyl-D-aspartate B |
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| NAA | N-acetyl aspartate; naphthaleneacetic acid; neutral amino acid; neutron activation analysis; neutrop... |
| NAA/Cr | N-acetyl aspartate/creatine [ratio] |
| NMDA | N-methyl-D-aspartate |
| NMDAR | N-methyl-D-aspartate receptor |
| receptors, n-methyl-d-aspartate | A class of ionotropic glutamate receptors characterised by affinity for n-methyl-d-aspartate. Nmda receptors have an allosteric binding site for glycine which must be occupied for the channel to open efficiently and a site within the channel itself to which magnesium ions bind in a voltage-dependent manner. The positive voltage dependence of channel conductance and the high permeability of the conducting channel to calcium ions (as well as to monovalent cations) are important in excitotoxicity and neuronal plasticity. (12 Dec 1998) |
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| potassium magnesium aspartate | <chemical> An intra-extracellular electrolyte exchange agent with a variety of effects. Beneficial in cardiac insufficiency, potentiates the effect of cardiac glycosides by reducing their toxicity, has hypocholesteraemic effects and potentiates the effects of calcium in disturbed calcium metabolism. Synonym: panangin; tromcardin. Chemical name: DL-Aspartic acid, monopotassium salt, mixt. With potassium hydrogen (T-4)-bis(DL-aspartato(2-)-N,O1)magnesate(2-) (12 Dec 1998) |
| protein-D-aspartate methyltransferase | <enzyme> For protein carboxymethylases consider also protein o-methyltransferase Registry number: EC 2.1.1.77 Synonym: d-aspartyl-l-isoaspartyl methyltransferase, protein d-aspartate-l-isoaspartate methyltransferase, protein l-isoaspartate o-methyltransferase, protein-beta-aspartate methyltransferase, protein-l-isoaspartate methyltransferase, protein l-isoaspartyl methyltransferase, isoaspartyl-aspartyl protein methyltransferase, protein-d-asp methyltransferase, l-isoaspartyl protein carboxymethyltransferase, pcm gene product, pcmt1 gene product (26 Jun 1999) |
| N-acyl-D-aspartate amidohydrolase | <enzyme> Specific for d-aspartate; amino acid sequence given in first source Registry number: EC 3.5.1.- Synonym: d-aaase, n-acyl-d-asp amidohydrolase (26 Jun 1999) |
| N methyl D aspartate receptor | <physiology> Glutamate receptor sub type (see excitatory amino acids). N methyl D aspartate receptor channels seem to be potentiated by intracellular arachidonic acid. Acronym: NMDA (26 Mar 1998) |
| IMP-aspartate ligase | <enzyme> A carbon-nitrogen ligase. During purine ribonucleotide biosynthesis, this enzyme catalyses the synthesis of adenylosuccinate from GTP, imp, and aspartate with the formation of orthophosphate and GDP. Chemical name: IMP:L-aspartate ligase (GDP-forming) Registry number: EC 6.3.4.4 (12 Dec 1998) |
| L-aspartate oxidase | <enzyme> E coli enzyme; forms unstable product, iminoaspartate; b protein of quinolinate synthetase Registry number: EC 1.4.3.16 Synonym: b-protein, quinolinate synthetase, l-aspartate - fumarate oxidoreductase (26 Jun 1999) |
| alanine aminotransferase | <enzyme> An enzyme that is found primarily in the liver. It is released into the bloodstream as the result of liver damage. Also called the alanine aminotransferase (ALT) or serum glutamic pyruvic transaminase (SGPT). (27 Sep 1997) |
| alanine-glyoxylate aminotransferase | <enzyme> Do not confuse with serine-pyruvate aminotransferase (EC 2.6.1.51), even though they may be products of the same gene; index whichever is discussed or both Registry number: EC 2.6.1.44 Synonym: pyruvate (glyoxylate) aminotransferase, kynurenine-glyoxylate aminotransferase, alanine-glyoxylate aminotransferase 1,dimethylarginine pyruvate aminotransferase, alanine-glyoxylate transaminase 1,alanine-glyoxylate aminotransferase 2 (26 Jun 1999) |
| alanine-oxomalonate aminotransferase | <enzyme> An enzyme that accomplishes the reversible transfer of the amino groups from l-alanine to oxomalonate, an action similar to that of alanine aminotransferase, producing pyruvate and aminomalonate. (05 Mar 2000) |
| aminotransferase | <enzyme> A family of enzymes that catalyse the transfer of an amino group from an alpha-amino acid to an alpha-keto acid, as in the transfer from glutamic acid to oxaloacetic acid, to form aspartic acid and alpha ketoglutarate. One reactant is often glutamic acid and the reactions employ pyridoxal phosphate as co-enzyme. (04 May 1997) |
| asparagine-oxo-acid aminotransferase | <enzyme> Consider also EC 2.6.1.45, serine-glyoxylate aminotransferase, which also acts on asparagine Registry number: EC 2.6.1.14 Synonym: asparagine transaminase (26 Jun 1999) |
| beta-alanine-pyruvate aminotransferase | <enzyme> An enzyme that reversibly transfers the amino group of beta-alanine to paruvate, thus producing l-alanine and malonate saemialdehyde. A deficiency of this enzyme is believed to be the cause of hyper-beta-alaninaemia. (05 Mar 2000) |
| beta-aminoisobutyrate:pyruvate aminotransferase | Beta-aminosiobutyrate:pyruvate transaminase;an enzyme that catalyses the reversible transfer of an amino group from beta-aminoisobutyrate to pyruvate, producing l-alanine and methylmalonate saemialdehyde. A step in valine degradation. A deficiency of beta-aminoisobutyrate:pyruvate aminotransferase results in hyper-beta-aminoisobutyric aciduria. (05 Mar 2000) |
| glutamate aminotransferase | <enzyme> Aromatic keto acid acts as amine acceptor Registry number: EC 2.6.1.- (26 Jun 1999) |