埋于膜中的离散电荷的维里展开。
A virial expansion for discrete charges buried in a membrane.
作者信息
Tsien R Y
出版信息
Biophys J. 1978 Nov;24(2):561-7. doi: 10.1016/S0006-3495(78)85402-2.
Abstract
Recent experiments (1,2) have shown that hydrophobic ions adsorbed to lipid membranes repel each other significantly at densities as low as one charge every few tens of square nanometers. This paper shows how to calculate the mutual repulsion of a population of such ions, assumed to be discrete but free to diffuse laterally in the plane of the membrane. The results fall between those for uniformly smeared charges (the "three-capacitor" model) and those for discrete charges immobilized on a periodic lattice.
摘要
最近的实验（1,2）表明，吸附在脂质膜上的疏水离子在密度低至每几十平方纳米一个电荷时就会相互显著排斥。本文展示了如何计算这类离子群体的相互排斥力，假设这些离子是离散的，但可在膜平面内自由横向扩散。结果介于均匀涂抹电荷（“三电容”模型）和固定在周期性晶格上的离散电荷的结果之间。
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本文引用的文献
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Effect of ionic polarizability on electrodiffusion in lipid bilayer membranes.离子极化率对脂质双分子层膜中电扩散的影响。
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Inner voltage clamping. A method for studying interactions among hydrophobic ions in a lipid bilayer.内膜电压钳制：一种研究脂质双分子层中疏水性离子间相互作用的方法。
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Electrostatic interactions among hydrophobic ions in lipid bilayer membranes.脂质双分子层膜中疏水性离子间的静电相互作用。
Biophys J. 1978 Jan;21(1):35-70. doi: 10.1016/S0006-3495(78)85507-6.
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The effect of discrete charges on the electrical properties of a membrane. I.
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