Synergistic action of Galleria mellonella apolipophorin III and lysozyme against Gram-negative bacteria

► G. mellonella apoLp-III enhances lysozyme muramidase activity. ► G. mellonella apoLp-III enhances lysozyme perforating activity toward E. coli. ► G. mellonella apoLp-III and lysozyme alter structure of bacterial cell surface. ► G. mellonella apoLp-III and lysozyme alter properties of bacterial cell surface. ► G. mellonella apoLp-III and lysozyme do not form intermolecular complexes.