1. Kyushu Institute of Technology; 680-4, Kawazu Iizuka Fukuoka 820-8502 Japan
2. Keio University; Institute of Advanced Bioscience; 246-2, Mizukami, Kakuganji, Tsuruoka Yamagata 997-0017 Japan
3. Osaka University; Department of Bioinfromatic Engineering, Graduate School of Information Science and Technology; 1-5 Yamada-oka Suita Osaka 565-0871 Japan
4. Osaka University; International Center for Biotechnology; 2-1 Yamada-oka Suita Osaka 565-0871 Japan