1. Institute of Biochemistry and Biophysics, Biological and Pharmaceutical Faculty, Friedrich-Schiller-University, Philosophenweg 12, 07743 Jena, Germany, Institute of Molecular Biotechnology, Theoretical Biophysics, Beutenbergstr. 11, 07745 Jena, Germany, Institute of Molecular Cell Biology, Medical Faculty, Friedrich-Schiller-University, Drackendorfer Str. 1, 07747 Jena, Germany, and School of Engineering and Science, International University Bremen, Campus Ring 8, 28759 Bremen, Germany