Interactions between membrane proteins

Details Interactions between membrane proteins Interactions between membrane proteins

Publishing date

Jun 2000

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..519..398p&link_type=abstract

Journals

STATISTICAL PHYSICS: Third Tohwa University International Conference. AIP Conference Proceedings, Volume 519, pp. 398-404 (2000

Science

Physics

Additional info 3

Proteins, Membranes, Bilayers, And Vesicles, Theory And Modeling, Computer Simulation

Type

Scientific paper

Abstract

We consider the interaction between membrane inclusions such as proteins embedded in fluctuating membranes. The modification of fluctuations of membranes by membrane inclusions leads to an attractive long-range interaction between them. We characterize membrane inclusions by symmetric-traceless tensors and determine the coupling between the inclusion's characteristic tensors and membrane curvature. Using a field theoretic approach, we find the interaction falls off with the separation R between inclusions as 1/R4. The orientational parts of the interaction depend on the characteristic tensors of the inclusions. These interactions are reminiscent of multipolar forces, and for large R these interactions are considerably larger than van der Waals interactions and electrostatic interactions, and provide the dominant force inducing aggregation of the membrane inclusions. .

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