title: An endogenous protease activating plasma inactive renin.
abstract: 1. The protease inhibitors Trasylol and soyabean trypsin inhibitor prevented the activation of plasma inactive renin by acid. 2. N-Ethylmaleimide inhibited acid-activation to some extent but o-phenathroline had no effect. 3. Acid-activation of the inactive renin in human plasma is mediated by a serine protease.
mesh_terms: D004789:Enzyme Activation / Q000187:drug effects; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D010447:Peptide Hydrolases / Q000097:blood*; D011480:Protease Inhibitors / Q000494:pharmacology; D012083:Renin / Q000097:blood*
chemical_list: D011480:Protease Inhibitors; D010447:Peptide Hydrolases; D012083:Renin