1. Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, Garching, D-85747, Germany
2. Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians-University of Munich (LMU), Butenandtstrasse 5-13, Munich, D-81377, Germany
3. Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, Garching, D-85747, Germany