Puromycin-sensitive amino peptidase also known as cytosol alanyl aminopeptidase or alanine aminopeptidase (AAP) (EC3.4.11.14) is an enzyme that in humans is encoded by the NPEPPSgene.[5][6][7] It is used as a biomarker to detect damage to the kidneys, and that may be used to help diagnose certain kidney disorders. It is found at high levels in the urine when there are kidney problems.[8]
^Thompson MW, Tobler A, Fontana A, Hersh LB (May 1999). "Cloning and analysis of the gene for the human puromycin-sensitive aminopeptidase". Biochemical and Biophysical Research Communications. 258 (2): 234–40. doi:10.1006/bbrc.1999.0604. PMID10329370.