1. Department of Biochemical Sciences “A. Rossi Fanelli”, Sapienza, University of Rome , Rome 00185, Italy
2. Institute of Molecular Biology and Pathology, National Research Council , Rome 00185, Italy
3. Department of Biosciences, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi and NOLIMITS, University of Milano , Milano 20133, Italy
4. School of Biochemistry, University of Bristol, University Walk , BS8 1TD Bristol , UK
5. Geoffrey Pope Building, University of Exeter , Stocker Road, Exeter EX4 4QD, UK
6. Living Systems Institute, University of Exeter , Stocker Road, Exeter EX4 4QD, UK
7. Cryo-Electron Microscopy Core Facility, Human Technopole , Milano 20157, Italy
8. Department of Chemistry, Sapienza, University of Rome , Rome 00185, Italy
9. Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza, University of Rome , Rome 00185, Italy