1. Institute of Organic
Chemistry and Center of Biomolecular Research (BMWZ),
Schneiderberg 1B, Leibniz University Hannover, D-30167 Hannover, Germany
2. The Astbury Centre for Structural
Molecular Biology, University of Leeds,
Leeds LS2 9JT, U.K.
3. Department
of Chemistry, University of Washington,
Seattle, Washington 98195-1700,
United States
4. Department
of Chemical Biology, Helmholtz Center for Infection Research (HZI), Inhoffenstraße
7, D-38124 Braunschweig, Germany
5. Institute of Biophysics, Herrenhäuser
Straße 2, Leibniz University Hannover, 30419 Hannover, Germany