1. Department Chemie und Pharmazie, Ludwig-Maximilians-Universität München, 81377 München, Germany
2. Hall-Atwater Laboratories, Wesleyan University, Middletown, Connecticut 06459, United States
3. Department for Theoretical and Computational Biophysics, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
4. Institut de Biologie Structurale (IBS), 38044 Grenoble, France
5. Faculty of Chemistry and Chemical Biology, Technical University Dortmund, 44227 Dortmund, Germany