pH对脂质双分子层膜界面张力的影响。
Effect of pH on the interfacial tension of lipid bilayer membrane.
作者信息
Petelska A D, Figaszewski Z A
机构信息
Laboratory of Interfacial Electrochemistry, Faculty of Chemistry, University of Warsaw, 02-093 Warsaw, Poland.
出版信息
Biophys J. 2000 Feb;78(2):812-7. doi: 10.1016/S0006-3495(00)76638-0.
Abstract
The dependence of the interfacial tension of a lipid bilayer on the pH of the aqueous solution has been studied. A theoretical equation is derived to describe this dependence. Interfacial tension measurements of an egg phosphatidylcholine bilayer were carried out. The experimental results agreed with those derived from the theoretical equation obtained close to the isoelectric point within a range of three pH units. A maximum corresponding to the isoelectric point appears both in the theoretical equation and in the experimental data.
摘要
研究了脂质双层的界面张力对水溶液pH值的依赖性。推导了一个理论方程来描述这种依赖性。对鸡蛋磷脂酰胆碱双层进行了界面张力测量。在三个pH单位的范围内，实验结果与在接近等电点时从理论方程得出的结果一致。理论方程和实验数据中均出现了对应于等电点的最大值。
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