1. Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
2. Department of Biomedicine, Faculty of Health, Aarhus University, 8000 Aarhus C, Denmark
3. Institute of Structural Biology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
4. Bavarian NMR Center, Department of Chemistry, Technical University of Munich, 85747 Garching, Germany