1. Institute
of Pharmacy, Eberhard Karls Universität Tübingen, Auf
der Morgenstelle 8, 72076 Tübingen, Germany
2. Department
of Chemistry and Zukunftskolleg, Universität Konstanz, 78457 Konstanz, Germany
3. Structural
and Computational Biology Unit, EMBL, Meyerhofstrasse 1, 69117 Heidelberg, Germany
4. Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
5. Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany