has part has part has role guanidines polar amino acid arginine Arginine CHEBI:2643 Harg 2-amino-5-(carbamimidamido)pentanoic acid CHEBI:29016 KEGG:C02385 arginine Wikipedia:L-Arginine CHEBI:22616 2-Amino-5-guanidinovaleric acid Arginin 2-amino-5-guanidinopentanoic acid An alpha-amino acid that is glycine in which the alpha-is substituted by a 3-guanidinopropyl group. argininate argininium(1+) alpha-amino acid 3-carbamimidamidopropyl group fundamental metabolite