Affiliation: | National Research Laboratory of Molecular Genetics, Department of Biological Science, KAIST, Daejeon 305-701, South Korea,1. Laboratory of Cell Signaling, Aging Research Center, South Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, South Korea,2. Department of Biological Sciences, Seoul National University, San 56-1, Silim-dong, Gwanak-gu, Seoul 151-747, South Korea3. |