DNA Intercalation in Neutral Multilamellar Membranes: Experiments and Theory |
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Authors: | Tanja Pott Annie Colin Laurence Navailles Didier Roux |
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Institution: | (1) Institut für Röntgenphysik, Universität Göttingen, Geiststr. 11, 37037 Göttingen, Germany; |
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Abstract: | We report both an experimental and a theoretical work on the effect of confinement on a biological polymer (DNA) incorporated to multilamellar phase. We can see that even when no electrostatic interaction are involved this semi-flexible polymer can be incorporated in between the membranes. X-ray provides experimental evidence for the existence of a mixed DNA/Phospholipid structure. The nature of the DNA ordering is briefly described. A theoretical model is developed to describe the phase diagram. We emphasize the role of the isotropic/nematic transition of the DNA molecules to explain the ability to confine DNA in membranes. |
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