1. Department
of Physical Biochemistry, Max Planck Institute of Biophysical Chemistry, Am Fassberg 11, 37077 Goettingen, Germany
2. Institut
für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
3. Gene
Center and Department for Biochemistry, University of Munich, 81377 Munich, Germany
4. Center
for integrated Protein Science Munich (CiPSM), University of Munich, 81377 Munich, Germany