1. Department of Biochemistry and Center for Advanced Medical Education by BK21 project, College of Medicine, Inha University, Chungsuk Building, Room 505, Shinheung-dong, Chung-gu, Incheon 400-712, Korea, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, Korea, Molecular Oncology Branch, National Cancer Center, Madu 1-dong, Goyang-si, Gyeonggi-do 416-769, Korea, Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden, and Department of...