a water-soluble polymer of peptidoglycan subunits which was prepared by treatment of staphylococcus epidermidis wall peptidoglycan with an interpeptide bridge-splitting enzyme ( endopeptidase ) also definitely enhanced the virus production in macrophage cultures , although its activity was weaker than that of the original wall and peptidoglycan .
C0014442
enzyme
C0030946
endopeptidase