Abstract
1 Division of Integrative Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8572, Japan
2 Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
3 Institute of Hyperthermophiles, Motobu-Noge Hospital, Aza-Ohama 880-1, Motobu, Okinawa 905-0212, Japan