Institute for Molecular Science & Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Myodaiji, Okazaki, Aichi 444-8787, Japan, and RIKEN SPring-8 Center, Harima Institute, 1-1-1, Kouto, Sayo, Hyogo 679-5148, Japan(2008-02-01時点)
