1. Electron Bio-Imaging Centre, Diamond Light Source, Didcot OX11 0DE, United Kingdom
2. Protein Production UK, The Research Complex at Harwell, Didcot OX11 OFA, United Kingdom
3. Structural Biology, The Rosalind Franklin Institute, Didcot OX11 OQS, United Kingdom
4. Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
5. Division of Structural Biology, University of Oxford, Oxford OX3 7BN, United Kingdom
6. School of Biochemistry & Biotechnology, University of the Punjab, Lahore 54590, Pakistan