1. Biological Physics Laboratory, Department of Physics and Astronomy, Faculty of Science and Engineering, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
2. Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
3. School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, Victoria 3010, Australia
4. Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
5. ISIS Pulsed Neutron & Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, U.K.
6. Institute Laue Langevin, 71 Avenue des Martyrs, CS-20156, Grenoble 38042, France
7. State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China