1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
2. Center for Biosystems Dynamics Research (BDR), RIKEN, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
3. Graduate School of Systems Engineering, Kindai University, 1 Takaya-umenobe, Higashihiroshima, Hiroshima 739-2116, Japan