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Patterns in the Protein Motions through the Biomembrane
Abstract A biomembrane consists of the lipid bilayer and the proteins (and also some sugar chains, which are neglected here). The motion of the proteins are important subjects in the cell physiology. Only the lateral motion is considered here. In the physiological region of temperature, the lipid bilayer takes a kind of liquid crystal phase. Such layer is usually regarded as a two- dimensional viscous and incompressible fluid sandwiched by semi-infinite regions of water. This view was advocated by Saffmanand Delbrueck1 in their theory of the mobility of a membrane protein. The celebrated Saffman-Delbrueck theory predicts that the size dependence of the protein mobility is weak; the logarithmic dependence on the size of the protein. This result implies hat the back flow in the two-dimensional fluid induced by the protein motion extends to a longrange region. Hence it is expected that there exist long-range interactions among membrane proteins. It is the purpose of this report to show the interprotein forces a rising from the hydrodynamical origin. It will be seen that the proteins cannot be regarded as independent Brownian particles.
Patterns in the Protein Motions through the Biomembrane
Abstract A biomembrane consists of the lipid bilayer and the proteins (and also some sugar chains, which are neglected here). The motion of the proteins are important subjects in the cell physiology. Only the lateral motion is considered here. In the physiological region of temperature, the lipid bilayer takes a kind of liquid crystal phase. Such layer is usually regarded as a two- dimensional viscous and incompressible fluid sandwiched by semi-infinite regions of water. This view was advocated by Saffmanand Delbrueck1 in their theory of the mobility of a membrane protein. The celebrated Saffman-Delbrueck theory predicts that the size dependence of the protein mobility is weak; the logarithmic dependence on the size of the protein. This result implies hat the back flow in the two-dimensional fluid induced by the protein motion extends to a longrange region. Hence it is expected that there exist long-range interactions among membrane proteins. It is the purpose of this report to show the interprotein forces a rising from the hydrodynamical origin. It will be seen that the proteins cannot be regarded as independent Brownian particles.
Patterns in the Protein Motions through the Biomembrane
Izuyama, Takeo (Autor:in)
01.01.1988
3 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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