Water Permeability through the Lipid Bilayer Membrane

1 Water Permeability through the Lipid Bilayer Membrane 

Since spontaneous water permeation across the lipid membranes is a rare event in the simulation time range, the permeation rate cannot be straightforwardly measured via ordinal MD simulation. Therefore, we need an alternative approach to assess the water permeability across the lipid membranes. According to the inhomogeneous diffusion model proposed by Marrink and Berendsen [63], permeability coefficient, P, is derived by 

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