SOPC was chosen as both lipid types have transition temperature far below the temperature at experiments. In the revised version, we measured the bending modulus for another lipid type (POPC), measured and analysed by the same method for the same experimental conditions.
As a comparison of archaeal lipids, SOPC was used in this study. SOPC contains an unsaturated bond in its alkyl chains and its transition temperature seems to be quite low compared with archaeal lipids. What is the reason why the authors selected the SOPC for the representative of eukaryotic lipids?