1. Department of Picobiology/Life Science; Graduate School of Life Science; University of Hyogo; 3-2-1 Koto Kamigori-cho, Ako-gun Hyogo 678-1297 Japan
2. The RIKEN SPring-8 Center; 1-1-1 Koto Sayo-cho, Sato-gun Hyogo 678-5248 Japan
3. Department of Bioscience and Biotechnology; Graduate School of Natural Science and Technology; Okayama University; Tsushima-naka Okayama 700-8530 Japan