1. CBS, Centre de Biochimie Structurale; CNRS UMR5048-INSERM UMR 1054; 29, Rue de Navacelles 34090 Montpellier France
2. ESRF; The European Synchrotron; 71, Avenue des Martyrs 38000 Grenoble France
3. Partnership for Soft Condensed Matter (PSCM); 71, Avenue des Martyrs 38000 Grenoble France
4. Department of Oral Biology; School of Dentistry and Molecular and Nanoscale Physics Group; School of Physics and Astronomy; University of Leeds; Leeds LS2 9JT UK