1. Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University,
Chuo-ku, Kumamoto 862-0973, Japan
2. Department of Molecular & Cellular BioAnalysis, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
3. Institute of Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0035, Japan