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Biophysical Journal 58: 1303-1306 (1990)
© 1990 the Biophysical Society

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Lateral diffusion in a mixture of mobile and immobile particles. A Monte Carlo study.

M J Saxton

Plant Growth Laboratory, University of California, Davis 95616.

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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Copyright © 1990 by the Biophysical Society.