The Molecular Motion of Spin Labeled Amphiphilic Molecules in Model Membranes

  • Anders Ehrenberg
  • Yuhei Shimoyama
  • L. E. Göran Eriksson
Part of the Nobel Foundation Symposia book series (NOFS, volume 34)


The theoretical background of a method to evaluate EPR spectra of spin labeled amphiphilic molecules in lipid bilayers is outlined. A model of restricted motion is applied including restricted rotation around the molecular long axis and rapid tumbling of this axis within the confines of a cone. The validity of the model is critically tested by application to oriented lipid multibilayer samples measured at three microwave frequencies. It is shown that detailed information about the mode of ordering and motion of the spin label molecule may be obtained.


Lipid Bilayer Electron Spin Resonance Spectrum Correlation Time Molecular Motion Spin Label 
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Copyright information

© Plenum Press, New York 1977

Authors and Affiliations

  • Anders Ehrenberg
    • 1
  • Yuhei Shimoyama
    • 1
  • L. E. Göran Eriksson
    • 1
  1. 1.Department of BiophysicsStockholm University Arrhenius Laboratory, FackStockholmSweden

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