1. NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation (NITE), 2-5-8 Kazusa-kamatari, Kisarazu, Chiba 292-0818, Japan
2. Technical Development Bureau, Nippon Steel Corporation, 20-1 Shintomi, Futtsu-shi, Chiba 293-8511, Japan
3. Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, Tokyo 112-8551, Japan