. "114601829"^^ . "113765795"@en-us . "organic compounds containing an amino group and a carboxylic acid group; \"proteins are composed of various proportions of about 20 common amino acids\""@en-us . . . "amino acid"^^ . . "0"^^ . "0"^^ . "amino acid"@en-us . "14601829-n"^^ . . . . "aminoalkanoic acid"@en-us . . "110460927"@en-us . . . . .