1. Graduate School of Bioresources, Mie University, Tsu, Mie 514-8507,Japan
2. Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-1293,Japan
3. Muscle Biology Group, University of Arizona, Tucson, AZ 85721,USA
4. Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8567, Japan