1. Department of Organic Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
2. Structural Chemogenomics, UMR 7200 CNRS-UdS, Université de Strasbourg, Illkirch F-67401, France
3. Leiden/Amsterdam Center for Drug Research, Division of Medicinal Chemistry, Faculty of Science, VU University Amsterdam, Amsterdam, The Netherlands
4. Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary