... Cbz-Gly-Gly-Ser, Cbz-Gly-Gly-Ala, Cbz-Gly-Gly-Leu,Cbz-Gly-Gly-Val, Cbz-Gly-Gly-Phe and Cbz-Gly-Phe;236 nm for Cbz-Gly-Gly-Tyr and Cbz-Gly-Tyr; and 302 nm for Cbz-Gly-Gly-Trp and Cbz-Gly-Trp. Initialrates, ... human carboxypeptidase A1; CPA2h, human carboxypepti-dase A2; CPBh, human carboxypeptidase B; CPAb, bovine carb-oxypeptidase A; LysC, lysyl endopeptidase; PCI, potatocarboxypeptidase inhibitor; ... method for reversible tight-binding inhibitors described by Bieth [15] was used.Carboxypeptidase concentration was left constant at0.8 nM and increasing amounts of inhibitor were added.At...