1. Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Meguro, Tokyo 153-8902, Japan
2. Universal Biology Institute, The University of Tokyo, Meguro, Tokyo 153-8902, Japan
3. Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
4. Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan