Tompkins R K, Croke J C
Am J Surg. 1980 Feb;139(2):237-9. doi: 10.1016/0002-9610(80)90262-7.
Studies using a refined substrate, n-acetyl-L-phenylalanyl-L-diiodotyrosine [n-APDT], demonstrate that bile salts inhibit pepsin activity in vitro by a noncompetitive effect on the enzyme.