1. Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany
2. Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
3. Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany
4. University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic
5. Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
6. Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Biocenter 5, 1030 Vienna, Austria