TEMPERATURE-DEPENDENCE OF THE RIPPLE STRUCTURE IN DIMYRISTOYLPHOSPHATIDYLCHOLINE STUDIED BY SYNCHROTRON X-RAY SMALL-ANGLE DIFFRACTION

被引：25

作者：

MATUOKA, S

KATO, S

AKIYAMA, M

AMEMIYA, Y

HATTA, I

机构：

[1] NAGOYA UNIV,SCH ENGN,FAC ENGN,DEPT APPL PHYS,NAGOYA 46401,JAPAN

[2] SAPPORO MED COLL,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN

[3] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 30032,JAPAN

来源：

BIOCHIMICA ET BIOPHYSICA ACTA | 1990年 / 1028卷 / 02期

关键词：

Dimyristoylphosphatidylcholine; Ripple structure; Small angle X-ray diffraction;

D O I：

10.1016/0005-2736(90)90145-E

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：

The ripple structure of 1,2-dimyristoyl-l-phosphatidylcholine (DMPC) multibilayer containing excess water (60 wt%) was studied by synchrotron X-ray small-angle diffraction. The (0,1) spacing which corresponds to the ripple repeat distance depends on temperature: At 13°C the (0,1) spacing is 14.15 nm, the spacing decreases at higher temperatures and reaches 12.1 nm at 23.5°C, just below the main transition temperature. The spacing is in good agreement between heating process and cooling process except for the supercooling region. The result suggests that the rearrangement of the ripple structure takes place during temperature change successively. The Landau-de Gennes free energy equation explains well the temperature dependence of the ripple repeat distance. © 1990.

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页码：103 / 109

页数：7

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