Based on visual inspection, the tails of the MMG-6 lipids seemed to show a greater degree of tilting, in comparison to the case for the tails of the MMG-1 lipids. The tilt angle distributions measured from the final 500 ns of the simulation confirm this observation: The MMG-6 tails adopt a more tilted position in the non-interdigitated cases with the maximum probabilities found in the range of 20°to 23°(tail 1), and 14°to 18°(tail 2) (Figure ).