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The permeation energy profile from MFEP (2D) and the center of mass translation (1D) calculated from TTMetaD. The reaction coordinate represents the permeation process from one side of the lipid bilayer to the other: 0 and 1 correspond to (−4 nm, −4 nm) and (4 nm, 4 nm) in the 2D case. The same values correspond to (−4 nm) and (4 nm) in the 1D case.
