1. AFMB, CNRS, Aix-Marseille Université, UMR 7257, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France
2. IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
3. Division of Structural Biology, Wellcome Centre for Human Genetics, Oxford OX3 7BN, UK
4. Diamond Light Source Limited, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK