1. Department of Applied ChemistryCollege of Life SciencesRitsumeikan University Kusatsu 525-8577 Japan
2. Center for Computational SciencesUniversity of Tsukuba Tsukuba 305-8577 Japan
3. RIKEN Center for Biosystems Dynamics Research (BDR) Suita 565-0874 Japan
4. Department of PhysicsGraduate School of Pure and Applied SciencesUniversity of Tsukuba Tsukuba 305-8577 Japan
5. Research and Utilization DivisionJapan Synchrotron Radiation Research Institute Sayo 679-5198 Japan