Institution: | a Korea Basic Science Institute, Gwangju Center, 300, Yongbong-Dong, Book-Ku, Gwangju 500-757, Republic of Korea b Department of Life Science, Dongguk University, Seoul 100-715, Republic of Korea c 21 Higher Education Center for Bioregulator Research, Chonnam National University, Gwangju 500-757, Republic of Korea d Molecular Therapy Research Center, Sungkyunkwan University, Seoul 135-710, Republic of Korea |