1. Department of Biomolecular Engineering; Graduate School of Bioscience and Biotechnology; Tokyo Institute of Technology; B-55, 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8501 Japan
2. Chemical Resources Laboratory; Tokyo Institute of Technology; R1-27, 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8503 Japan