Lateral diffusion in a mixture of mobile and immobile particles. A Monte Carlo study. |
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Authors: | M J Saxton |
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Affiliation: | Plant Growth Laboratory, University of California, Davis 95616. |
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Abstract: | The lateral diffusion coefficient for mixtures of mobile and immobile particles is obtained from Monte Carlo calculations of random walks by mobile tracers in the presence of immobile obstacles on a triangular lattice. The diffusion coefficient of the mobile species is obtained as a function of the area fractions of mobile and immobile species. The results are applied to diffusion of band 3 in the erythrocyte membrane, and indicate that obstruction of diffusion of mobile band 3 by band 3 and glycophorin attached to the membrane skeleton is not sufficient to explain the observed diffusion coefficient. |
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