1. School of Molecular Sciences, Arizona State University, Tempe, Arizona 85281, USA
2. Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47906, USA
3. Theoretical Molecular Biophysics Laboratory, National Heart, Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bethesda, Maryland 20814, USA
4. School of Mathematical and Statistical Sciences, Arizona State University, Tempe, Arizona 85281, USA
5. Computing and Computational Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA