UNSPECIFIED. (2003) Interactions between proteins bound to biomembranes. PHYSICAL REVIEW E, 67 (4 Part 1). -. ISSN 1063-651X

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Abstract

We study a physical model for the interaction between general inclusions bound to fluid membranes that possess finite tension gamma, as well as the usual bending rigidity kappa. We are motivated by an interest in proteins bound to cell membranes that apply forces to these membranes, due to either entropic or direct chemical interactions. We find an exact analytic solution for the repulsive interaction between two similar circularly symmetric inclusions. This repulsion extends over length scales similar torootkappa/gamma and contrasts with the membrane-mediated contact attraction for similar inclusions on tensionless membranes. For noncircularly symmetric inclusions we study the small, algebraically long-ranged, attractive contribution to the force that arises. We discuss the relevance of our results to biological phenomena, such as the budding of caveolae from cell membranes and the striations that are observed on their coats. These, and other, "gnarly buds" may prove fascinating to study further.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW E
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	1063-651X
Date:	April 2003
Volume:	67
Number:	4 Part 1
Number of Pages:	10
Page Range:	-
Identification Number:	10.1103/PhysRevE.67.041907
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/9733

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