... phase,respectively; cLis the lipidic molar volume [26] and[L] is the concentration of the lipid accessible to the peptide (the outer leaflet of the bilayer). In the presence of POPC LUV, for MPRP-C,MPRP-S ... mayreach the point where all of the membrane is homoge-neous. The MPRP-C is insensitive to the cholesterolcontent in the membrane, which is in agreement with the insensitivity of the peptide to the ... destabilizing them [15,16] and the presence of cholesterol and sphingomyelin (majorcomponents of the viral membrane) have an importantrole for the membrane perturbing actions of the pep-tide [17,18].There...