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Main Phase Transitions in Supported Lipid Single-Bilayer

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Presentation on theme: "Main Phase Transitions in Supported Lipid Single-Bilayer"— Presentation transcript:

1 Main Phase Transitions in Supported Lipid Single-Bilayer
A. Charrier, F. Thibaudau  Biophysical Journal  Volume 89, Issue 2, Pages (August 2005) DOI: /biophysj Copyright © 2005 The Biophysical Society Terms and Conditions

2 Figure 1 AFM images (8×2.5μm) of the lipid bilayer formation in 10−2M NaCl. Between each image, 2.5μl of DMPC at 10mg/ml has been added and stirred in the solution. The vesicle fusion is self-limited after the first bilayer. Biophysical Journal  , DOI: ( /biophysj ) Copyright © 2005 The Biophysical Society Terms and Conditions

3 Figure 2 AFM images (3×3μm) of transitions 1 and 2 of the DMPC supported single-bilayer at different temperatures. The darkest areas are holes in the bilayer. The sample is continuously heated under the AFM tip at a rate of 0.1°C/min. The temperature indicated in each image corresponds to the temperature in the middle of the image. Biophysical Journal  , DOI: ( /biophysj ) Copyright © 2005 The Biophysical Society Terms and Conditions

4 Figure 3 Experimental curves of transition 1 (open triangles) and evolution of holes (solid triangles) at increasing and decreasing temperatures. Biophysical Journal  , DOI: ( /biophysj ) Copyright © 2005 The Biophysical Society Terms and Conditions

5 Figure 4 Calculated curve of the percentage of gel phase versus temperature. In this calculation we consider a simple transition at constant surface and constant matter. Biophysical Journal  , DOI: ( /biophysj ) Copyright © 2005 The Biophysical Society Terms and Conditions

6 Figure 5 Experimental and modeled curves of the two transitions. The experimental curves are the average of three different measurements. Biophysical Journal  , DOI: ( /biophysj ) Copyright © 2005 The Biophysical Society Terms and Conditions


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