1. Program in Computational & Molecular Biophysics, Washington University School of Medicine, Saint Louis, Missouri 63110, United States
2. Department of Chemistry, Washington University in Saint Louis, Saint Louis, Missouri 63130, United States
3. Laboratoire de Chimie Théorique, Sorbonne Universités, UPMC Paris 06, UMR 7616, case
courrier 137, 4 place Jussieu, F-75005 Paris, France
4. Department of Biomedical Engineering, The University of Iowa, Iowa City, Iowa 52242, United States
5. Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States