aspartic acid


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aspartic acid

(əspär`tĭk), organic compound, one of the 20 amino acidsamino acid
, any one of a class of simple organic compounds containing carbon, hydrogen, oxygen, nitrogen, and in certain cases sulfur. These compounds are the building blocks of proteins.
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 commonly found in animal proteins. Only the l-stereoisomer participates in the biosynthesis of proteins. Its acidic side chain adds a negative charge and hence a greater degree of water-solubility to proteins in neutral solution and has been shown to be near the active sites of some enzymes (see pepsinpepsin,
enzyme produced in the mucosal lining of the stomach that acts to degrade protein. Pepsin is one of three principal protein-degrading, or proteolytic, enzymes in the digestive system, the other two being chymotrypsin and trypsin.
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). Aspartic acid is not essential to the human diet. It was discovered in protein in 1868.

aspartic acid

[ə′spärd·ik ′as·əd]
(biochemistry)
C4H7NO4 A nonessential, crystalline dicarboxylic amino acid found in plants and animals, especially in molasses from young sugarcane and sugarbeet.
References in periodicals archive ?
brasiliensis, showed arginine as the most abundant amino acid, and also glutamic acid, glycine, aspartic acid and lysine as major amino acids.
Redox behaviour of Zn(II) in presence of aspartic acid in 0.
The aspartic acid in aspartame excites brain cells, some say to a dangerous level.
Following defoliation, the major amino acids, aspartic acid and asparagine, and vegetative storage proteins (VSP) of 15, 19 and 32 kDa are mobilized as N sources for shoot regrowth (Cunningham and Volenec, 1996; Avice et al.
Substitution of asparagine for aspartic acid at residue 9 (D9N) of lipoprotein lipase markedly augments risk of ischaemic heart disease in male smokers.
Aspartic acid carries both potassium and magnesium into the cells quickly and efficiently.
Forestomach Dietary Amino acids Ration Rumen Omasum Abomasum Aspartic acid 6.
4]-labeled sample was then subjected to proteolytic digestion with endoproteinase Asp-N, which cleaves at aspartic acid residues, or aminopeptidase I, which nonspecifically removes amino acid residues inwards from N-terminus, for I hour at room temperature and followed by immunoprecipitation.
Anti-aging cosmeceuticals based on cysteine and biodegradable plastics based on aspartic acid will emerge as the newest and most promising applications developed by the industry.
Besides the foundation molecule, ribose-5-phosphate, it's necessary to have five molecules of ATP for energy to drive the various steps, one molecule of GTP, one of carbon dioxide, one of glycine, two of glutamine and two of aspartic acid to provide nitrogen atoms at different points in the process, and two groups of atoms from a vitamin called THF at separate steps.
The three amino acids studied (glycine, aspartic acid, and glutamic acid) have low molecular weights, are important in plant nitrogen metabolism, and occur in high concentrations in many organic soils (e.