the peptide mapping of the isolated beta-subunits after limited proteolysis by papain , pancreatic protease , alpha-chymotrypsin , or staphylococcus aureus v8 protease further demonstrates that the two forms of beta-subunits are not the product of a non-specific proteolytic action that occurred during the purification procedure , but rather reflects the existence in vivo of both forms of eif-2 .
C0030946
protease
C0597304
proteolytic