ID 3.4.17.20 DE Carboxypeptidase U. AN Arginine carboxypeptidase. AN Carboxypeptidase B2. AN Carboxypeptidase R. AN Plasma carboxypeptidase B. AN TAFI. AN Thrombin-activatable fibrinolysis inhibitor. CA Release of C-terminal Arg and Lys from a polypeptide. CF Zinc. CC -!- Pro-carboxypeptidase U in plasma is activated by thrombin or plasmin CC during clotting to form the unstable carboxypeptidase U. CC -!- Activity similar to that of the more stable lysine carboxypeptidase, CC except no preference is shown for Lys over Arg. CC -!- Belongs to peptidase family M14. DR Q2KIG3, CBPB2_BOVIN; Q96IY4, CBPB2_HUMAN; Q9JHH6, CBPB2_MOUSE; DR Q9EQV9, CBPB2_RAT ; //