1. Centre
for Molecular Simulation and Department of Biological Sciences, University of Calgary, 2500 University Drive, N.W., Calgary, Alberta T2N 1N4, Canada
2. Department
of Life Sciences, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
3. Membrane Protein
Lab, Diamond Light Source, Harwell
Science and Innovation Campus, Oxfordshire, OX11 0DE, United Kingdom
4. Rutherford Appleton Laboratory, Research Complex at Harwell, Oxfordshire OX11 0DE, United Kingdom