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  • Title: Pro-carboxypeptidase R cleaves bradykinin following activation.
    Author: Shinohara T, Sakurada C, Suzuki T, Takeuchi O, Campbell W, Ikeda S, Okada N, Okada H.
    Journal: Int Arch Allergy Immunol; 1994; 103(4):400-4. PubMed ID: 8130654.
    Abstract:
    Arginine carboxypeptidase (CPR) is a labile enzyme present in human serum which is unrelated to carboxypeptidase N. In this study we demonstrate that CPR exists in a precursor form in plasma and can be converted to the active form by trypsin and presumable trypsin-like enzymes. The trypsin-generated active form can not only cleave a small synthetic substrate, hippuryl-L-arginine, but can remove terminal arginine from bradykinin.
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