1. Marine Biotechnology Institute, Kamaishi Laboratories, Heita, Kamaishi, Iwate 026-0001,1
2. Laboratory of Molecular Microbiology, Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 252-8510,2 and
3. Laboratory of Applied Biochemistry, Department of Agriculture, Junior College, Nihon University, Fujisawa, Kanagawa 252-85107,3 Japan