Simple Model of Membrane Proteins Including Solvent
Abstract
We report a numerical simulation for the phase diagram of a simple two dimensional model, similar to one proposed by Noro and Frenkel [J. Chem. Phys. \textbf{114}, 2477 (2001)] for membrane proteins, but one that includes the role of the solvent. We first use Gibbs ensemble Monte Caro simulations to determine the phase behavior of particles interacting via a square-well potential in two dimensions for various values of the interaction range. A phenomenological model for the solute-solvent interactions is then studied to understand how the fluid-fluid coexistence curve is modified by solute-solvent interactions. It is shown that such a model can yield systems with liquid-liquid phase separation curves that have both upper and lower critical points, as well as closed loop phase diagrams, as is the case with the corresponding three dimensional model.
Cite
@article{arxiv.cond-mat/0510747,
title = {Simple Model of Membrane Proteins Including Solvent},
author = {D. L. Pagan and A. Shiryayev and T. P. Connor and J. D. Gunton},
journal= {arXiv preprint arXiv:cond-mat/0510747},
year = {2009}
}
Comments
16 pages, 9 figures. Two figures added, resubmitted for publication