1. Department of Physics; University of Osnabrück; Osnabrück Germany
2. Moscow Institute of Physics and Technology; Dolgoprudny Moscow Region Russia
3. Department Structural Biochemistry; Max Planck Institute of Molecular Physiology; Dortmund Germany
4. Faculty of Biology; Lomonosov Moscow State University; Moscow Russia
5. Institute of Biochemistry and Molecular Medicine; University of Bern; Bern Switzerland
6. Department of Physics; Institute of Experimental Physics, Genetic Biophysics; Freie Universität Berlin; Berlin Germany