Physical Properties of Biological Membranes

Details Physical Properties of Biological Membranes Physical Properties of Biological Membranes

2009-02-16

arxiv.org/abs/0902.2454v2

Chapter in: Handbook of Molecular Biophysics. Ed. H. G. Bohr. Wiley-VCH 2009, pp. 593-616

Physics

Biological Physics

16 pages, 15 figures - Introductory article on the physical properties of biological membranes

Scientific paper

Biological membranes mainly consist of lipids and proteins. While the proteins have many functions as single molecules, the membrane as a whole displays physical properties that cannot be explained on the single molecule level. For example, membranes show melting events, phase behavior, and elasticity. Biomembranes adapt their composition such that the physical properties are maintained when the external conditions change. This gives a role to changes in composition, to temperature and pressure. This article introduces into the physics of membranes as a whole and shows how phenomena as permeability, pulse propagation and the effect of anesthetics arise.

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