Arginine - definition from Biology-Online.org

[(Science: amino acid) An essential amino acid, a major component of proteins and contains the guanido group that has a pKa of greater than 12, so that it carries a permanent positive charge at physiological ph. It becomes an essential amino acid when the body is under stress or is in an injured state. depressed growth results from lack of dietary arginine. arginine deficiency syndrome is observed in human babies born with a phosphate synthetase deficiency. normal growth and development in these infants are achieved by adding arginine to their diet. arginine deficiency leads to carbamyl phosphate overproduction in the mitochondria due to inadequate ornithine supply. arginine-deficient diets in males causes decreased sperm counts. free and bound arginine are found in abundance in human male sperm and arginine has been found to stimulate sperm motility. there are two sources of arginine, arginine in the food Chain and free-form

MediLexicon arginine - Medical Dictionary Definition for Term 'arginine'

[1. An amino acid occurring among the hydrolysis products of proteins, particularly abundant in the basic proteins such as histones and protamines. A dibasic amino acid.

InChI: InChI=1/C6H14N4O2/c7-4(5(11)12)2-1-3-10-6(8)9/h4H,1-3,7H2,(H,11,12)(H4,8,9,10)/f/h8,10-11H,9H2


CAS number 7004-12-8

    Amino acid(Arg-)
    2-amino-5-guanidinopentanoic acid
    2-Amino-5-guanidinovaleric acid
    2-amino-5-(carbamimidamido)pentanoic acid

    PubChem CID 232
    Beilstein =1725411
    CAS 7004-12-8 (from NIST)
    CAS 7200-25-1 (from NIST)
    ChEBI 29016
    Kegg C02385
    PubChem ID 5424