1. Department
of Biochemistry and Molecular Biology, Graduate School of Science
and Engineering, Saitama University, Shimo-ohkubo 255, Sakura-ku, Saitama 338-8570, Japan
2. Department
of Bioscience, Graduate School of Agriculture, Tokyo University of Agriculture, Sakuragaoka 1-1-1, Setagaya-ku, Tokyo 156-8502, Japan