1. Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan
2. Division of Bioenvironmental Science, Frontier Science Research Center, University of Miyazaki, Miyazaki, Japan
3. Division of Microbiology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
4. Department of Plant Genome Research, Kazusa DNA Research Institute, Chiba, Japan
5. Department of Microbiology, School of Pharmacy, Aichi Gakuin University, Aichi, Japan
6. Department of Microbiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan