1. Kazusa DNA Research Institute, Chiba 292-0818, Japan
2. Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
3. School of Life Science, Tokyo University of Pharmacy and Life Science, Tokyo 192-0392, Japan
4. Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan
5. Institute of Biological Sciences, University of Tsukuba, Ibaraki 305-8572, Japan
6. Department of Biology, Faculty of Science, Kobe University, Kobe 657-8501, Japan
7. The Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
8. Laboratory of Chemistry, Teikyo University School of Medicine, Tokyo 192-0395, Japan
9. Department of Biology, Faculty of Science, Okayama University, Okayama 700-8530, Japan