1. Center for Molecular Simulations, Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
2. Advanced Computing for Life Sciences and Engineering, Computing and Computational Sciences, National Center for Computational Sciences, Oak Ridge National Lab, Oak Ridge, Tennessee 37830, United States
3. Section on Molecular Transport, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
4. Laboratory of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071 Castellón, Spain
5. Department of Physiology, University of California, Los Angeles, California 90095, United States
6. LISM UMR 7255, CNRS and Aix-Marseille University, Marseille cedex 20, 13402, France
7. Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States