1. Department of Pharmacy and Biotechnology, University of Bologna, Bologna 40127, Italy
2. ID16A Beamline, ESRF, the European Synchrotron, Grenoble 38043, France
3. National Institute of Biostructures and Biosystems, Rome 00136, Italy
4. Department of Biomedical and Clinical Sciences L. Sacco, University of Milan, Milan 20122, Italy
5. Institute of Crystallography, National Research Council, Bari 70126, Italy
6. ALBA Synchrotron Light Source, Cerdanyola del Vallès, Barcelona 08290, Spain