1. Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
2. Department of Bioscience, Fukui Prefectural University, 4-1-1 Yoshida-Gun, Fukui 910-1195, Japan
3. Japan Biological Informatics Consortium (JBIC), 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan
4. National Institute of Advanced Industrial Science and Technology, 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan