MAGNETIC-ANISOTROPY OF LECITHIN MEMBRANES - A NEW ANISOTROPY SUSCEPTOMETER

被引：64

作者：

SCHOLZ, F ^{[1
]}

BOROSKE, E ^{[1
]}

HELFRICH, W ^{[1
]}

机构：

[1] FREE UNIV BERLIN, FACHBEREICH PHYS, D-1000 BERLIN 33, FED REP GER

来源：

BIOPHYSICAL JOURNAL | 1984年 / 45卷 / 03期

关键词：

D O I：

10.1016/S0006-3495(84)84196-X

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Cylindrical giant vesicles prepared from egg lecithin and 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) are oriented in an external magnetic field and observed by phase contrast microscopy. The anisotropic part of the diamagnetic susceptibility of the lecithin membrane is determined from the distribution of angles between the magnetic field and the long cylinder axis due to thermal fluctuations. The anisotropy of DMPC is larger by a factor of 2 than that of egg lecithin. This is attributed to the presence of unsaturated acyl chains in egg lecithin.

引用

页码：589 / 592

页数：4

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