1. Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM2-ENSCM-UM1, cc 1701; Place Eugène Bataillon; F-34095 Montpellier cedex 05 France
2. Department of Chemistry and Biochemistry; University of California Los Angeles; 405 Hilgard Avenue Los Angeles CA 90095 USA
3. Institut Des Sciences Chimiques de Rennes; CNRS UMR 6226 Université Rennes 1 Campus Beaulieu; F-35042 Rennes Cedex France
4. Univ. Bordeaux; Institut des Sciences Moléculaires UMR CNRS 5255; 351 Cours de la Libération F-33405 Talence Cedex France
5. Institut des Biomolécules Max Mousseron UMR 5247 CNRS, UM 1; UM 2 - Faculté de Pharmacie; 15 Avenue Charles Flahault; 34093 Montpellier Cedex 05 France
6. Department of Microbiology, Immunology and Molecular Genetics; University of California Los Angeles; 405 Hilgard Avenue Los Angeles CA 90095 USA