1. Department of Biochemistry and Molecular Biophysics, Washington University in Saint Louis, Saint Louis, Missouri63110, United States
2. Theoretical Molecular Biophysics Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland20814, United States
3. Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, CanadaN1G 2 W1