all of the a- and b-pattern proteinases were most active at acid ph in the presence of dithiothreitol and were inhibited by various agents such as trans-epoxysuccinyl-l-leucylamido- ( 4-guanidino ) butane ( e64 ) , leupeptin and chymostatin , which inactivate cysteine proteinases .
C0030940
proteinases
C2717970
cysteine proteinases