we have isolated and characterized two minor extracellular proteases from culture supernatants of a strain of bacillus subtilis containing deletion mutations of the genes for the extracellular proteases subtilisin ( apr ) and neutral protease ( npr ) and a minor extracellular protease ( epr ) as well as intracellular serine protease-i ( isp-1 ) .
C0038601
subtilisin
C0036734
serine protease