Phosphatidyl-Glycerol in Mixtures with Positively Charged Amphiphiles: A 2H- and 31P-NMR Study of the Phase Behaviour and Headgroup Structure

  • R. G. K. Habiger
  • J. Seelig
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 66)


The thermotropic behaviour of membranes composed of 1-palmitoy 1-2-oleoyl-sn3-phosphatidyl-glycerol (POPG) and dimethyl-dihexadecyl-ammonium bromide (DHAB) was investigated with differential scanning calorimetry and 2H- and 31Pnmr spectroscopy. The main transition temperature, Tm , from the gel state to the liquid-crystalline state (l.c.) showed a local maximum around 40 mole % DHAB in the membranes. With nmr spectroscopy we also detected non-bilayer properties of the system. Both the DSC scans and the phase diagram of the system are presented.


Differential Scanning Calorimetry Quadrupole Splitting Liquid Crystalline State Phosphatidyl Glycerol Thermotropic Behaviour 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • R. G. K. Habiger
    • 1
  • J. Seelig
    • 1
  1. 1.Department of BiophysicsBiocenter of the University of BaselBaselSwitzerland

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