Aminopeptidases catalyze the hydrolysis of amino acid residues from the N-terminus of peptide or proteinsubstrates. Able to cleave angiotensin III to generate angiotensin IV, a bioactive peptide of the renin-angiotensinpathway. Not able to cleave angiotensin I and angiotensin II. May play a role in the proteolytic processing ofbioactive peptides in tissues such as testis and heart
