Brownian Motion in Biological Membranes

Brownian Motion in Biological Membranes

Brownian motion (diffusion) of particles in membranes occurs in a highly anisotropic environment. For such particles a translational mobility (independent of velocity) can be defined if the viscosity of the liquid embedding the membrane is taken into account. The results of a model calculation are p...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1975-08, Vol.72 (8), p.3111-3113
Hauptverfasser: Saffman, P. G., Delbruck, M.
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Anura
Biological Transport
Boundary conditions
Brownian motion
Cell Membrane - metabolism
Diffusion
Diffusion coefficient
Liquids
Mathematics
Membranes - metabolism
Models, Biological
Molecular rotation
Molecules
Particle diffusion
Particle motion
Photoreceptor Cells - metabolism
Protein Conformation
Rhodopsin - metabolism
Viscosity
Viscous flow
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Beschreibung
Zusammenfassung:Brownian motion (diffusion) of particles in membranes occurs in a highly anisotropic environment. For such particles a translational mobility (independent of velocity) can be defined if the viscosity of the liquid embedding the membrane is taken into account. The results of a model calculation are presented. They suggest that for a realistic situation translational diffusion should be about four times faster in relation to rotational diffusion than in the isotropic case.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.72.8.3111