1. Department of Pharmacy and Biotechnologies, University of Bologna, Via Belmeloro 6, 40126 Bologna,
Italy
2. Physico-Chemical
Biology, Centro
de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
3. Swiss Tropical and Public Health Institute, 4002 Basel, Switzerland
4. University of Basel, Petersplatz 1, 4003 Basel, Switzerland
5. Biochemistry Center (BZH), Heidelberg University, Im, Neuenheimer Feld 328, 69120
Heidelberg, Germany
6. Department
of Chemistry, University of Alberta, Edmonton,
Alberta, T6G 2G2,
Canada