We first examine the packing density parametersarea per lipid <AL>, membrane thickness <TL>, volume per lipid <VL>and fluidity parameterslateral diffusion coefficient Dxy and rotational auto-correlation function (RCF)of three membrane systems NM, MMS, and MMU from CG resolution. (The methods for calculating the above properties are described in Section 2 of SI.) Figure shows that with decreasing temperature, <AL> and <VL> decrease, while <TL> increases almost linearly for both the NM and MMU membranes.