Journal
ADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume 208, Issue -, Pages 25-33Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cis.2014.01.018
Keywords
Membrane elasticity; Surface thermodynamics; Curvature; Trans-monolayer elasticity profile; Molecular dynamics
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Funding
- Israel Science Foundation (ISF) [758/11]
- Juan de la Cierva postdoctoral fellowship
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Helfrich model of membrane bending elasticity has been most influential in establishment and development of Soft-Matter Physics of lipid bilayers and biological membranes. Recently, Helfrich theory has been extensively used in Cell Biology to understand the phenomena of shaping, fusion and fission of cellular membranes. The general background of Helfrich theory on the one hand, and the ways of specifying the model parameters on the other, are important for quantitative treatment of particular biologically relevant membrane phenomena. Here we present the origin of Helfrich model within the context of the general Gibbs theory of capillary interfaces, and review the strategies of computing the membrane elastic moduli based on considering a lipid monolayer as a three-dimensional thick layer characterized by trans-monolayer profiles of elastic parameters. We present the results of original computations of these profiles by a state-of-the-art numerical approach. (c) 2014 Elsevier B.V. All rights reserved.
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