1. Department of Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
2. Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
3. Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
4. Department of Chemistry, University of Natural Resources and Life Sciences, 1190 Vienna, Austria