Why is denaturing sds-page used for running sds-page electrophoresis of egg-white lysozyme and not non-denaturing page?
may be because of toomany disulfide linkages
Bacterial cell walls contain a layer of peptidoglycan, which is the specific site that lysozyme attacks. The layer contains alternating molecules called N-acetylglucosamine and N-acetylmuramic acid. These molecules form a strong chain that acts as the backbone for the cell wall. The link between the two is cleaved by lysozyme. Once this chain is broken by lysozyme, it results in bacterial death.
Lysozyme disrupts the cell walls of gram positive bacteria. This type of bacteria contain a peptidoglycan covering that functions as a protective barrier. Lysozyme hydrolyzes the crosslinkages between chains of peptidoglycans. When these cross linkages are disrupted the cell can no longer protect itself from the outside environment. drazx is the original author of this answer