1. Laboratory of Chemical Biology, Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612AZ Eindhoven, The Netherlands
2. Chemical Genomics Centre of the Max-Planck Society, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
3. Max-Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
4. Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits, 2050 Johannesburg, South Africa