3 Computational Biophysics Research Team , RIKEN Center for Computational Science , 7-1-26 Minatojima-Minamimachi , Chuo-ku, Kobe , Hyogo 650-0047 , Japan.
4 Laboratory for Biomolecular Function Simulation , RIKEN Center for Biosystems Dynamics Research , 1-6-5 Minatojima-Minamimachi , Chuo-ku, Kobe , Hyogo 650-0047 , Japan.
5 Department of Mechanical and Aerospace Engineering , Old Dominion University , Norfolk , Virginia 23529 , United States.
6 Department of Chemistry and Biochemistry , University of California San Diego , San Diego , California 92093-0340 , United States.