arginine

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arginine

(är`jənĭn), 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 basic side chain adds a positive charge and hence a greater degree of water-solubility to proteins in neutral solution. Although arginine can be synthesized from cellular metabolites, it is usually considered essential to the diet of children for the maintenance of normal rates of growth. Arginine is the direct metabolic precursor of ureaurea
, organic compound that is the principal end product of nitrogen metabolism in most mammals. Urea was the first animal metabolite to be isolated in crystalline form; its crystallization was described in the early 18th cent.
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, the dominant nitrogenous waste product of most mammals. It was discovered in protein in 1895.

arginine

[′ar·jə‚nēn]
(biochemistry)
C6H14N4O2 A colorless, crystalline, water-soluble, essential amino acid of the α-ketoglutaric acid family.
References in periodicals archive ?
Whole body arginine metabolism and nitric oxide synthesis in newborns with persistent pulmonary hypertension.
Citrulline, ornithine, and proline also play critical roles in arginine metabolism.
To better elucidate the mechanisms underlying arginine metabolism, we set out to develop a targeted metabolomics method that would simultaneously quantify 6 arginine metabolites in plasma with well-established roles in the arginine/iNOS/Arg1 pathway (see online Supplemental Fig.
Changes of the intestinal epithelial brush border membrane arginine transport activity reflect the status of both local enterocyte's arginine metabolism as well as whole organ system arginine metabolism (Pan et al.
NMMA inhibits crucial metabolic processes involving arginine metabolism that are independent of protein synthesis, in particular, the activity of the L-arginine-dependent enzyme, NADPH diaphorase (4).
vulgaris cultivar FM 53 to salinity and to further contrast the effect of salination on arginine metabolism in P.