Spontaneous Curvature, Differential Stress, and Bending Modulus of Asymmetric Lipid Membranes
نویسندگان
چکیده
منابع مشابه
Estimation of the bending rigidity and spontaneous curvature of fluid membranes in simulations.
Several numerical methods for measuring the bending rigidity and the spontaneous curvature of fluid membranes are studied using two types of meshless membrane models. The bending rigidity is estimated from the thermal undulations of planar and tubular membranes and the axial force of tubular membranes. We found a large dependence of its estimate value from the thermal undulation analysis on the...
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A fluid lipid membrane transmits stresses and torques that are fully determined by its geometry. They can be described by a stress- and torque-tensor, respectively, which yield the force or torque per length through any curve drawn on the membrane's surface. In the absence of external forces or torques the surface divergence of these tensors vanishes, revealing them as conserved quantities of t...
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We establish a computational approach to extract the bending modulus, KC , for lipid membranes from relatively small-scale molecular simulations. Fluctuations in the splay of individual pairs of lipids faithfully inform on KC in multicomponent membranes over a large range of rigidities in different thermodynamic phases. Predictions are validated by experiments even where the standard spectral a...
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In the classical formulation of the elastic bending energy stored in a bilayer, the spontaneous curvatures of the monolayers enter via their sum. Accounting for the
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2020
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2019.11.661