1. Department of Chemistry, Duke University, Durham, North Carolina 27708, Laboratory of Chemical Genomics, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea, School of Bioscience and Biotechnology, College of Natural Sciences, Chungnam National University, Daejeon 305-764, Korea, Laboratory of Immunology, Cancer Research Institute, College of Medicine, Seoul National University, Seoul 110-799, Korea, and Department of Life Science, Gwangju Institute of Science & Technology, Gwangju...