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Profiles of the electrostatic potential from the center of the bilayer to the bulk solution as a function of distance along the bilayer normal (z axis). The total electrostatic potential (upper) and the contributions from the water (middle) and lipid components (lower) are shown, with results from the refined polarizable model (solid line) and the nonpolarizable CHARMM force field (both C27 (dotted line) and the revised C27r (74) (dashed line)).
