MD simulations of lipid mixtures. Snapshots of the mixed lipid bilayers containing DC8,9PC at the end of simulations for the gel (GP2 and GP3, upper panels) and liquid (LP2 and LP3, lower panels) phase matrix. In the bilayers, white beads represents DPPC or POPC, and ice blue beads represent DC8,9PC, except some highlighted atoms in lipids. In the lipid head groups, phosphates, nitrogens, oxygens are shown as green, cyan, and red beads, respectively. In the lipid tails, triple bonded carbons are shown as yellow beads, and carbons in methyl groups are shown as gray beads. Waters are represented as blue (oxygen) and white (hydrogen) beads.