two types of phospholipase b of penicillium notatum , the native type and the modified type that is thought to be generated by the introduction of some nicks into the native type of enzyme by the endogenous protease ( s ) , were distinguished on a slab sodium dodecyl sulfate ( sds ) -polyacrylamide gel electrophoresis under a nonreducing condition .
C0014442
enzyme
C0030946
protease