1. Center for Functional Protein Assemblies, Technical University of Munich, 85748 Garching, Germany
2. Department of Biology I, Microbiology, Ludwig-Maximilians-University München, 82152 Martinsried, Germany
3. Rowland Institute, Harvard University, Cambridge, MA 02142
4. Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, Netherlands
5. Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
6. Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Center for Infection Research, 66123 Saarbrücken, Germany