1 School of Biological Sciences, University of Auckland, Auckland, New Zealand.
2 University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
3 University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.
4 Collaborative Crystallisation Centre (C3), CSIRO, 343 Royal Parade, Parkville, VIC 3052, Australia.
5 School of Biotechnology and Biomolecular Sciences, UNSW, Sydney, NSW 2052, Australia.
6 Cambridge Institute for Medical Research, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, United Kingdom.
7 Departamento de Estructura de Macromoleculas, Centro Nacional de Biotecnologia, Consejo Superior de Investigaciones Cientificas, E-28049, Madrid, Spain.