1. Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
2. Centre for Medicines Discovery, University of Oxford, Headington OX3 7DQ, UK
3. Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
4. Research Complex at Harwell, Harwell Science and Innovation Campus, Didcot OX11 0FA, UK
5. Structural Genomics Consortium, University of Oxford, Headington OX3 7DQ, UK
6. Department of Biochemistry, University of Johannesburg, Auckland Park, Johannesburg 2006, South Africa