1. Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
2. Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira,
Aoba-Ku, Sendai 980-8577, Japan
3. Earth-Life Science Institute, Tokyo Institute of Technology, Ookayama 2-12-1-i7E-307, Meguro-Ku, Tokyo 152-8550, Japan