aspartic acid


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aspartic acid

 [ah-spahr´tik]
a dibasic amino acid, one of the nonessential amino acids, widely distributed in proteins and found as an excitatory neurotransmitter in the central nervous system.

as·par·tic ac·id (Asp),

(as-par'tik as'id),
The l-isomer is one of the amino acids occurring naturally in proteins. The d-isomer is found in cell walls of many bacteria.

aspartic acid

(ə-spär′tĭk)
n.
A nonessential amino acid, C4H7NO4, found especially in young sugarcane and sugar-beet molasses.

as·par·tic ac·id

(Asp) (as-pahr'tik as'id)
The l-isomer is one of the amino acids occurring in proteins.
Synonym(s): alpha (α)-aminosuccinic acid.

aspartic acid

An AMINO ACID which the body can synthesise. It is found in sugar cane and sugar beet and in asparagus.
Aspartic acidclick for a larger image
Fig. 53 Aspartic acid . Molecular structure.

aspartic acid or aspartate (D, Asp)

one of 20 AMINO ACIDS common in proteins. It has an extra carboxyl group and is therefore acidic in solution. The ISOELECTRIC POINT of aspartic acid is 2.8.
References in periodicals archive ?
Aspartic acid and L-alanine levels in the oysters also decreased by factors of 0.59 and 0.46 relative to the control oysters at day 2.
Amino analysis of cyanobacterial cultures showed that most of amino acids are present in all three strains but glycine, alanine, valine, proline, asparagine, aspartic acid, glutamic acid and lysine were present in appreciable amounts.
The parameters of ten kinds of metabolites detected by ion trap mass spectrometry Metabolites parent ion CE ion Citric acid 191 87 25eV D-Frutose-6-phosphate dipotassium salt 259 97 27eV Dipotassium D-Glucose-6-phosphate 259 97078.9 27eV 2-ketoglutaric acid 145 101 18eV Glutamic acid 146 128 20eV Fumaric acid 115 71 20eV Pyruvic acid 87 87 10eV Aspartic acid 132 88 27eV Succitric acid 117 73 27eV Isocitric acid trisodium salt hydrate 191 1110173.1 27eV Table 3.
For instance, the three amino acids with the highest concentrations in the different types of organic amendments were glutamic acid (5.55-6.90 mg/g), aspartic acid (4.56-9.14 mg/g), and glycine (3.37-6.59 mg/g).
The variation found in the interassay of more than 10%, but not exceeding 15%, was observed for ornithine, alanine, valine, and aspartic acid and was acceptable [32] considering that methods with pipetting, such as the one used for amino acid analysis, usually yield CVs between 10% and 15% [20, 33].
Generally, aspartic endopeptidases depend on its aspartic acid residues for their catalytic activity [4].
T4 contained higher aspartic acid (Asp), threonine (Thr), alanine (Ala), leucine (Leu), isoleucine (Ile), and phenylalanine (Phe) concentrations than the other samples (p<0.05), which can have a negative impact on the sensory quality, as high concentrations of Met, Leu, and Ile may increase the bitter taste of dry fermented sausages [19].
The glutamic acid was the most abundant in all meals, followed by lysine, leucine, glycine and aspartic acid (Table 4).
DAP in water at room temperature also phosphorylated the amino acids glycine, aspartic acid and glutamic acid, and then helped link these molecules into short peptide chains (peptides are smaller versions of proteins).
For example, the mice exposed to nicotine, especially the males, had lower concentrations of glycine, serine, and aspartic acid, which could weaken the addictive effect of nicotine.
(10) This effect may have been due in part to the aspartate component of the supplement, since administration of aspartic acid (2% in drinking water) has been shown to decrease morphine dependence in rats.