1. Experimental Physics, Saarland University, Center for Biophysics, 66123 Saarbrücken, Germany
2. Theoretical Physics, Saarland University, Center for Biophysics, 66123 Saarbrücken, Germany
3. Institute of Physical Chemistry and Physics of Polymers, Leibniz Institute of Polymer Research, 01069 Dresden, Germany
4. Department of Physics, Princeton University, Jadwin Hall, Princeton, NJ 08544-0001, USA
5. Insitute of Medical Microbiology and Hygiene, Saarland University, Center for Biophysics, 66421 Homburg/Saar, Germany
6. Physical Chemistry of Polymer Materials, Technical University Dresden, 01062 Dresden, Germany