Cells membranes are very complex systems, characterized by a big number of different biological com- ponents embedded in a bilayer structure of phospholipids. To understand function and connexions between components it is useful to start from a very simple membrane model: an “artificial” bilayer formed by only one phospholipid. X-ray diffraction at small angle is the ideal tool to characterize the structure of the bi- layer. In this paper we present a calculation of the electron density profile along the bilayer normal direction: (z), for an hydrated DPPC bilayer at different temperature. Through this analysis we also extract other structural parameter of the bilayer and some parameters associated to self-organization of DPPC.

Analysis of x-ray spectra on dppc bilayers

2012

Abstract

Cells membranes are very complex systems, characterized by a big number of different biological com- ponents embedded in a bilayer structure of phospholipids. To understand function and connexions between components it is useful to start from a very simple membrane model: an “artificial” bilayer formed by only one phospholipid. X-ray diffraction at small angle is the ideal tool to characterize the structure of the bi- layer. In this paper we present a calculation of the electron density profile along the bilayer normal direction: (z), for an hydrated DPPC bilayer at different temperature. Through this analysis we also extract other structural parameter of the bilayer and some parameters associated to self-organization of DPPC.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/2500903
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