○Jia-Cheng Wu^1,2, Sok-Keng Tong³, Ming-Yi Chou³, Jui-Hsia Weng^2,1 (1. Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan (R. O. C.), 2. Institute of Biological Chemistry, Academic Sinica, Taipei, Taiwan (R. O. C.), 3. Department of Life Science, National Taiwan University, Taipei, Taiwan (R. O. C.))