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arXiv · 1201.1143

Attractive double-layer forces between neutral hydrophobic and neutral hydrophilic surfaces

Eduardo R. A. Lima·Mathias Boström·Nadine Schwierz·Bo E. Sernelius·Frederico W. Tavares
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Abstract

The interaction between surface patches of proteins with different surface properties has a vital role to play driving conformational changes of proteins in different salt solutions. We demonstrate the existence of ion-specific attractive double-layer forces between neutral hydrophobic and hydrophilic surfaces in the presence of certain salt solutions. This is done by solving a generalized Poisson-Boltzmann equation for two unequal surfaces. In the calculations we utilize parameterized ion-surface-potentials and dielectric-constant-profiles deduced from recent non-primitive-model molecular dynamics (MD) simulations that account partially for molecular structure and hydration effects.

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Eduardo R. A. Lima, Mathias Boström, Nadine Schwierz, Bo E. Sernelius, Frederico W. Tavares. 2012-01-05. Attractive double-layer forces between neutral hydrophobic and neutral hydrophilic surfaces. https://doi.org/10.1103/physreve.84.061903

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