1. Division of Biotechnology, Nanormics Research Institute; Seoul 02752 Korea
2. Molecular Recognition Research Center; Korea Institute of Science and Technology; Seoul Korea
3. Department of Chemical Biology; Korea University of Science and Technology; Seoul 02792 Korea
4. Cancer Biomarkers Development Research Center and Biomedical Mouse Resource Center; Korea Research Institute of Bioscience and Biotechnology; Daejeon 34141 Korea
5. Division of Mass Spectrometry; Korea Basic Science Institute; Cheongwon-Gun 363-883 Korea
6. Department of Neuroscience; Korea University of Science and Technology; Seoul 02792 Korea