the sulfhydryl-blocking reagent 5,5'-dithiobis ( 2-nitrobenzoic acid ) ( dtnb ; ellman 's reagent ) strongly inhibited both the biological effect of the pheromone on the recipient cell and the hydrolysis of the pheromone , which is catalyzed by the mating type-specific surface endopeptidase of the recipient cell .
C0020291
hydrolysis
C0030946
endopeptidase