Relaxation kinetics of lipid membranes and its relation to the heat capacity

被引：76

作者：

Grabitz, P ^{[1
]}

Ivanova, VP ^{[1
]}

Heimburg, T ^{[1
]}

机构：

[1] Max Planck Inst Biophys Chem, Membrane thermodynam Grp, D-37077 Gottingen, Germany

来源：

BIOPHYSICAL JOURNAL | 2002年 / 82卷 / 01期

关键词：

D O I：

10.1016/S0006-3495(02)75395-2

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We investigated the relaxation behavior of lipid membranes close to the chain-melting transition using pressure jump calorimetry with a temperature accuracy of similar to10(-3) K. We found relaxation times in the range from seconds up to about a minute, depending on vesicular state. The relaxation times, are within error proportional to the heat capacity. We provide a statistical thermodynamics theory that rationalizes the close relation between heat capacity and relaxation times. It is based on our recent finding that enthalpy and volume changes close to the melting transition are proportional functions.

引用

页码：299 / 309

页数：11

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