1. Disease Target Structure Research Center; Korea Research Institute of Bioscience and Biotechnology; Daejeon 305-333 South Korea
2. Department of Biological Sciences; KAIST Institute for the Biocentury, Korea Advanced Institute of Science and Technology; Daejeon 305-701 South Korea
3. Molecular Immunology Laboratory; Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences; Moscow 117997 Russia
4. Research Division for Biotechnology; Korea Atomic Energy Research Institute; Jeongeup 580-185 South Korea
5. Department of Analytical Bioscience; University of Science and Technology; Daejeon 305-333 South Korea