1. Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon S7N 5C9, Canada
2. Department
of Chemistry, University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium
3. Department
of Chemical and Physical Biology, Centro de Investigaciones Biologicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
4. Structural
Biology Unit, CIC bioGUNE, Parque Tecnologico de Bizkaia Building 801A, 48160 Derio, Spain
5. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
6. Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K.