It manifests, how different types of lipids interact among each other and predicts the possibility of phase separation assisted phase transition . The most abundant lipids of a particular membrane system are only considered. For the NM and MMS systems, we notice, with decrease in temperature, peak height of g(r) increases for all types of lipids (Figure ) which suggests the same and different kinds of lipids equally interact with each other, giving rise to a homogenous distribution of lipids inside the membrane. On the other hand, in MMU system, same type of lipids interact more strongly among each other in comparison to the different types of lipids. This indicates a partial phase separation between the monounsaturated and diunsaturated lipids in the MMU membrane, which induces fluid-to-gel phase transition. Hence, the cyclopropane rings not only inhibit the cooling induced phase transition of the cyclopropane containing lipids, but also protects other lipids from the deleterious effect of cold shock.