to investigate the possible role of aminopeptidase n ( alpha-aminoacyl-peptide hydrolase ( microsomal ) , ec 3.4.11.2 ) in the transport of amino acids from oligopeptides , the modified amino acids phe ( n3 ) and phe ( n3 , i ) and the tetrapeptides phe ( n3 ) or phe ( n3 , i ) -l-or-dala-gly-gly have been synthesized .
C0002520
amino acids
C0017890
gly