bestatin was found to be a competitive inhibitor ( with respect to the leu-na substrate ) not only of the isolated microsomal and cytosolic leucine aminopeptidases ( leu-apm and leu-apc ) but also of the aminopeptidases ( aps ) present in membrane preparations ( from mouse liver ) and on the cell surface of l5178y cells .
C0023402
leucine
C0002570
aminopeptidases