期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 117, 期 39, 页码 11633-11640出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp401722g
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Molecular dynamics (MD) simulations of electrophoretic transport of monovalent ions through field-stabilized electropores in POPC lipid bilayers permit systematic characterization of the conductive properties of lipid nanopores. The radius of the electropore can be controlled by the magnitude of the applied sustaining external electric field, which also drives the transport of ions through the pore. We examined pore conductances for two monovalent salts, NaCl and KCl, at physiological concentrations Na+ conductance is significantly less than K+ and Cl- conductance and is a nonlinear function of pore radius over the range of pore radii investigated The single pore electrical conductance of KCl obtained from MD simulation is comparable to experimental values measured by chronopotentiometry.
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