1. Department of Chemistry and Institute for Advanced Study, Technical University of Munich, Garching 85747, Germany.
2. Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg 85764, Germany.
3. Center for Integrated Protein Science Munich at Department of Chemistry, Technical University of Munich, Garching 85747, Germany.
4. Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
5. Dipartimento di Bioscienze, Università degli studi di Milano, 20133 Milano, Italy.