What is the substrate for aminopeptidase? Aminopeptidase P1 APP1 hydrolyzes a number of physiological substrates including bradykinin (Arg↓Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg-NH2), substance P (Arg↓Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2), corticortropin-like intermediate lobe peptide,…