Calculating the Bending Modulus for Multicomponent Lipid Membranes in Different Thermodynamic Phases.

Calculating the Bending Modulus for Multicomponent Lipid Membranes in Different Thermodynamic Phases.
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DOI:
10.1021/ct400492e
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发表时间:
2013-09-10
影响因子:
5.5
通讯作者:
Harries, Daniel
Harries, Daniel
中科院分区:
化学1区
文献类型:
--
作者:
Khelashvili, George;Kollmitzer, Benjamin;Heftberger, Peter;Pabst, Georg;Harries, Daniel

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我们建立了一个计算方法来提取的弯曲模量,KC,从相对小规模的分子模拟脂质膜。在不同热力学相的刚性范围很大的多组分膜中,单个对脂质的张开中的波动忠实地告知KC。即使在标准的基于光谱分析的方法失败的情况下,预测也通过实验进行验证。这种方法的局部性质可能使其扩展到计算KC在蛋白质负载膜。
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 analysis-based methods fail. The local nature of this method potentially allows its extension to calculations of KC in protein-laden membranes.
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