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Biophys J, July 2000, p. 80-93, Vol. 79, No. 1
Department of Chemistry, University of Pittsburgh, Pittsburgh,
Pennsylvania 15260, USA, and Department of Chemistry,
Tel Aviv University, Tel Aviv, 69978 Israel
A recently introduced real-space lattice methodology for
solving the three-dimensional Poisson-Nernst-Planck equations is used
to compute current-voltage relations for ion permeation through the
gramicidin A ion channel embedded in membranes characterized by surface
dipoles and/or surface charge. Comparisons to a variety of experimental
results, presented herein, have proven largely successful. Strengths
and weaknesses of the method are discussed.
Biophys J, July 2000, p. 80-93, Vol. 79, No. 1
© 2000 by the Biophysical Society 0006-3495/00/07/80/14 $2.00
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