1. Research Group of EPR Spectroscopy; Max Planck Institute for Biophysical Chemistry; Am Fassberg 11 Göttingen Germany
2. Department of NMR Based Structural Biology; Max Planck Institute for Biophysical Chemistry; Am Fassberg 11 Göttingen Germany
3. Department of Chemistry; Georg-August-University; Tammannstrasse 4 Göttingen Germany
4. Institute of Physical and Theoretical Chemistry and Center of Biomolecular Magnetic Resonance; Goethe University; Max-von-Laue-Strasse 7 Frankfurt am Main Germany