the disulfide bond in cys-194-cys-222 of the isolated b chain ( uk x b ) of human urinary urokinase was selectively carboxamidomethylated ( r x cam-uk x b ) after specific reduction with dithiothreitol in the presence of the competitive inhibitor n-alpha-benzoyl-l-argininamide ( bzargnh2 ) and 0.3 m guanidine with inactivation .
C0086418
human
C0042071
urokinase