The Journal of Biological Physics and Chemistry

2003

Volume 3, Number 3/4, pp. 82–84

Ariel Fernández^1,2 and Kristina Rogale³

¹Institute for Biophysical Dynamics, Department of Computer Science, The University of Chicago, Chicago, Illinois 60637

²Indiana University School of Informatics and Center for Computational Biology and Bioinformatics, Indiana University Medical School, 714 N. Senate Avenue, Indianapolis, IN 46202

³Department of Mathematics, The University of Chicago, Chicago, Illinois 60637

Charge screening in confined water: frequency dissection

The known frequency dependence of water permittivity must be taken into account when dealing with water confinement at dimensions commensurate with the range of electrostatic interactions. Accordingly, a consistent Fourier analysis of induced polarization is essential to determine the modulation of electric fields in protein folding or inside ion channels. The rigorous treatment given here reproduces the ad hoc spatial dependence of water permittivity adopted in molecular dynamics computations

PACS numbers: 82.35.Np, 87.15.-v, 87.15.Aa

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