Analysis of shape, fluctuations, and dynamics in intermembrane junctions.
A dynamic-elastic model for weakly adhered intermembrane junctions is presented. Helfrich membrane energetics coupled to hydrodynamic modes of the surrounding solvent reproduce the average shape, fluctuations, and dynamics of these junctions as measured experimentally. Comparison between numerical results and experimental data provides the first direct measure of surface tension in these systems (0.01-0.06 dyn/cm). The measurements suggest bilayer-bilayer adhesion energetics as the dominant source of surface tension in the experimental systems.
Lin
Lawrence C-L
LC
Department of Physics, and Department of Chemistry and Biochemistry, University of California, Santa Barbara, California, USA.
Groves
Jay T
JT
Brown
Frank L H
FL
D003198:Computer Simulation; D007365:Intercellular Junctions / Q000737:chemistry* / Q000502:physiology; D008051:Lipid Bilayers / Q000737:chemistry* / Q000378:metabolism*; D008560:Membrane Fluidity / Q000502:physiology*; D008954:Models, Biological; D008956:Models, Chemical; D008958:Models, Molecular
D008051:Lipid Bilayers