1. Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
2. Department of Physics, J-419, City College of New York, 138th Street, Convent Avenue, New York, New York 10031, United States
3. Department of Biological Sciences, Brock University, 500 Glenridge Avenue, St. Catherines, ON LS2 3A1, Canada
4. Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
5. Department of Chemistry, Graduate School of Science, and The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Sumiyoshi, Osaka 558-8585, Japan
6. Division of Bioscience, Graduate School of Natural Science and Technology/Faculty of Science, Okayama University, 1-1, Naka 3-chome, Tsushima, Okayama 700-8530, Japan