1. Physical Chemistry, ETH Zürich, Vladimir‐Prelog‐Weg 2, 8093 Zurich (Switzerland)
2. Institute of Molecular Biology and Biophysics, ETH Zurich, Otto‐Stern‐Weg 5, 8093 Zurich (Switzerland)
3. Brookhaven National Laboratory, 50 Bell Avenue, Building 463,Upton, NY 11973‐5000 (USA)
4. Institute of Biophysical Chemistry, Center for Biomolecular Magnetic Resonance and Frankfurt Institute for Advanced Studies, Goethe University, Frankfurt am Main (Germany)
5. Institut de Biologie et Chimie des Protéines, Bases Moléculaires et Structurales des Systèmes Infectieux, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, 7 passage du Vercors, 69367 Lyon (France)