when sperm nuclei were treated with the esterase inhibitor nitrophenyl-p-guanidino benzoate ( npgb ) to inhibit the nuclear-associated proteolytic activity and then incubated with one of several exogenous proteinases in addition to dtt and triton x-100 , characteristic peptide banding patterns were seen for each exogenous proteinase employed .
C0030940
proteinases
C0030946
proteinase