the greater reactivity of the mr = 39,000 form with the dibasic probe suggests that the relative proportions of the mr = 39,000 and 31,500 forms of cathepsin b in different organelles may determine the extent to which the enzyme expresses activity as a specific ( prohormone processing ) endopeptidase or a more general ( degradative ) peptidase .
C0030946
endopeptidase
C0030940
peptidase