1. Helmholtz Centre for Infection Research (HZI), Biogenic Nanotherapeutics Group (BION), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus E8.1, 66123 Saarbrücken, Germany
2. Department of Pharmacy, Saarland University, Campus Building E8.1, 66123 Saarbrücken, Germany
3. Max Planck Institute for Terrestrial Microbiology, Marburg, Germany
4. Department of Physics, Philipps-Universität Marburg, Marburg, Germany
5. Biozentrum, University of Basel, Basel, Switzerland