ORDER-DISORDER AND THE PRETRANSITION IN DIPALMITOYL PHOSPHATIDYLCHOLINE MULTILAYERS

被引：31

作者：

GRADDICK, WF ^{[1
]}

STAMATOFF, JB ^{[1
]}

EISENBERGER, P ^{[1
]}

BERREMAN, DW ^{[1
]}

SPIELBERG, N ^{[1
]}

机构：

[1] KENT STATE UNIV,KENT,OH 44242

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1979年 / 88卷 / 03期

关键词：

D O I：

10.1016/0006-291X(79)91494-3

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：

Using x-ray diffraction, the interaction of calcium ions with dipalmitoyl phosphatidylcholine (DPPC) multilayers in excess solution has been studied as a function of temperature over a range of concentrations. We have discovered order-disorder-order transformations as a function of both increasing temperature and calcium concentration. For pure DPPC, the pretransition is characterized by a large increase in lattice disorder. For low calcium concentrations, a similar increase in lattice distortion occurs for all temperatures. The high temperature phase is marked by a significant reduction in this disorder. Likewise ordering of the multilayer is regained at high calcium concentrations. © 1979.

引用

页码：907 / 912

页数：6

共 11 条

[1] X-ray and crystallographic studies of plant virus preparations I. Introduction and preparation of specimens I. Modes of aggregation of the virus particles [J].