The Effect of Incorporation of Gramicidin on the Translational Lipid Diffusion in Bicontinuous Cubic Monoolein/Water Mesophases

被引：0
|
作者：
Pospiech, E. -M. [1 ]
Geil, B. [2 ]
Fujara, F. [3 ]
Winter, R. [1 ]
机构：
[1] TU Dortmund, Fak Chem, D-44227 Dortmund, Germany
[2] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany
[3] Tech Univ Darmstadt, Inst Festkorperphys, D-64289 Darmstadt, Germany
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2009年 / 223卷 / 09期
关键词：
NMR; Dynamics; SAXS; Translational Diffusion; Lipid Mesophases; Monoolein; Gramicidin; PHASE-BEHAVIOR; PRESSURE; NMR; TEMPERATURE; DYNAMICS; KINETICS; CHANNELS; SYSTEMS; SURFACE;
D O I：
10.1524/zpch.2009.6058
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of incorporating the polypeptide gramicidin on the lateral mobility of the monoacylglyceride monoolcin (MO) in its bicontinuous cubic lipid mesophases is studied applying static field gradient NMR. The effects of gramicidin on the topology, structure and phase behaviour of the system are characterized by small-angle x-ray scattering (SAXS) experiments. On the structural level the experiments show significant shifts in the boundaries of the various mesophases. Measurements of the translational dynamics are restricted to cubic mesophases, where the diffusion coefficients of lipid and additive are determined both by geometrical obstruction and by lipid-protein interaction effects.
引用
收藏
页码：1063 / 1077
页数：15
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