ATP System Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation, 5800-3 Nagatsuta, Midori-ku, Yokohama 226-0026, Japan; Department of Biological Sciences and Division of Biomedical Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom; Department of Molecular Biology, Tokyo University of Pharmacy and Life Science, Horinouchi, Hachioji, Tokyo 192-0392, Japan; and Chemical Resources Laboratory, Tokyo Institute of... (At 2003-12-18)