1. Electron Microscopy Group of Materials Science, Albert-Einstein-Allee 11, 89081 Ulm, Germany
2. Structure and Function of Proteins, Helmholtz Centre for Infection Research, Inhoffenstraße 7, Braunschweig, Germany
3. Helmholtz Centre for Infection Research, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus, Saarbrucken, 66123, Germany
4. Faculty of Chemistry, Department of Inorganic Chemistry, University of Vienna, AT-1090 Vienna, Austria
5. Institute of Pharmaceutical Biotechnology, Ulm University, James-Franck-Ring N27, 89081 Ulm, Germany