1. Department of Chemistry, University of Memphis, Memphis, Tennessee 38152, United States
2. School of Computational Sciences, Korea Institute for Advanced Study, Seoul 02455, South Korea
3. Department of Chemistry, Kangwon National University, Chuncheon 24341, South Korea
4. Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
5. Center for In Silico Protein Science, Korea Institute for Advanced Study, Seoul 02455, South Korea