1. Radioisotope Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku,
Tokyo 113-0032, Japan
2. Department
of Life Science and
Medical Bio-Science, Waseda University,
2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan
3. Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
4. Department of Microbiology,
Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898,
Japan
5. Institute of Medical
Chemistry, Hoshi University, Ebara 2-4-41,
Shinagawa-ku, Tokyo
142-8501, Japan
6. Department
of Chemistry, Biology
and Marine Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan