1. Department of Organic ChemistryUniversity of Duisburg–Essen Universitätstrasse 7 45141 Essen Germany
2. Department of Biomedical EngineeringEindhoven University of Technology P. O. Box 513 5600 MB Eindhoven The Netherlands
3. Department of TheoryMax-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
4. Computational BiochemistryFaculty of BiologyCenter of Medical BiotechnologyUniversity Duisburg–Essen Universitätsstrasse 2 45117 Essen Germany
5. Structural and Medicinal BiochemistryUniversity of Duisburg–Essen Universitätstrasse 1–5 45141 Essen Germany