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Influence of lipid composition and membrane curvature on fluorescence and solvent relaxation kinetics in unilamellar vesicles |
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| Authors: | R. Hutterer F. W. Schneider N. Pérez H. Ruf M. Hof |
| Affiliation: | (1) Institute of Physical Chemistry, University of Würzburg, Marcusstr. 9/11, D-97070 Würzburg, Germany;(2) Max-Planck-Institute for Biophysics, Kennedy Allec 70, D-50596 Frankfurt, Germany;(3) Institute of Physical Chemistry, Charles University, Albertov 2030, Cz-12840 Prague 2, Czech Republic |
| Abstract: | Time-resolved fluorescence on unilamellar vesicles shows that increasing amounts of anionic, natural lipid lead to a larger increase in polarity close to the headgroups than in the hydrophobic core of the bilayer. The region close to the headgroups is less polar in vesicles containing phosphatic acid rather than phosphatidylserine. A greater membrane curvature increases the mobility of the hydrated headgroups. |
| Keywords: | Lipid composition membrane curvature solvent relaxation unilamellar vesicles time-resulved fluorescence |
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