1. RIKEN Center for Computational Science, Kobe 650-0047, Japan
2. Fujitsu Limited, Kawasaki 211-8588, Japan
3. Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan
4. Graduate School of Information Science, University of Hyogo, Kobe, Hyogo 650-0047, Japan
5. Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan
6. Center for Molecular System, Kyushu University, 744 Motooka, Noshi-ku, Fukuoka 819-0395, Japan
7. Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan