Interfacial tension of phosphatidylcholine-cholesterol system in monolayers at the air/water interface

被引：28

作者：

Brzozowska, I

Figaszewski, ZA

机构：

[1] Univ Warsaw, Fac Chem, Lab Interfacial Electrochem, PL-02093 Warsaw, Poland

[2] Univ Bialystok, Inst Chem, PL-15443 Bialystok, Poland

来源：

BIOPHYSICAL CHEMISTRY | 2002年 / 95卷 / 02期

关键词：

egg lecithin; cholesterol; interfacial tension; monolayer; equilibrium;

D O I：

10.1016/S0301-4622(02)00029-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Interfacial tension of an egg lecithin-cholesterol system was measured across the whole concentration range. Surface pressure-area isotherm measurements were carried out in a Langmuir trough at the air/water interface at room temperature (22 degreesC). The interfacial tension of the air/water interface was divided into contributions of components. The interfacial tension of a 1:1 complex between phosphatidylcholine and cholesterol was calculated. Its value equals 18 mN/m. The difference between the stability constant of 1:1 complex in the bilayer and the monolayer at the air/water interface is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 179

页数：7

共 24 条

[21] CHOLESTEROL PHOSPHOLIPID INTERACTION IN MEMBRANES .2. STOICHIOMETRY AND MOLECULAR PACKING OF CHOLESTEROL-RICH DOMAINS [J].