1. Hiroshima
Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
2. Department
of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado 80523, United States
3. Graduate
School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
4. Department
of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan