Lysozymes, also known as muramidase or N-acetylmuramide glycanhydrolase, are a family of enzymes which damage bacterial cell walls by catalyzing hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrins. It's abundant in a number of secretions, such as tears, saliva, and mucus. Lysozyme's also present in cytoplasmic granules of the polymorphonuclear neutrophils (PMN). Large amo… (More on Lysozyme)