Journal
BIOELECTROCHEMISTRY
Volume 60, Issue 1-2, Pages 97-106Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S1567-5394(03)00052-5
Keywords
Brownian dynamics; ionic relaxation; diffuse double layer; bacteriorhodopsin
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A simplified Brownian dynamics model and the corresponding software implementation have been developed for the simulation of electrolyte dynamics on the mesoscopic scale. In addition to direct control simulations, the model system has been verified by a quantitative comparison with the Debye-Huckel theory. As a first application, the model was used to simulate ionic relaxation processes following abrupt intramembrane charge rearrangements in the case of a disk shaped membrane. In addition to its general implications, the obtained properties of the relaxation kinetics confirm the assumptions of the theory of the so-called suspension method, a technique capable of tracing molecular charge motions of membrane proteins in three dimensions. (C) 2003 Elsevier B.V. All rights reserved.
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