Lysozyme molecule. Computer model of a molecule of the antibacterial enzyme lysozyme. Lysozyme is a widely distributed protein in human bodily fluids, including tears and saliva. It is also found in egg white and plant latex. Lysozyme disrupts the polysaccharide components of bacterial cell walls, leaving them susceptible to destruction. Researchers are establishing which parts of the lysozyme molecule are effective against bacteria. Atoms are colour-coded: carbon (grey), hydrogen (red), nitrogen (purple), oxygen (blue) and sulphur (yellow).