1. Department of Chemistry, Center for Nature-inspired Technology in KINC; Korea Advanced Institute of Science and Technology; Daejeon 305-701 Republic of Korea
2. Department of Biotechnology; Yonsei University; Seoul 120-749 Republic of Korea
3. Department of Bioengineering, College of Engineering and Institute for Bioengineering and Biopharmaceutical Research; Hanyang University; Seoul 133-791 Republic of Korea
4. Department of Molecular Medicine and Biopharmaceutical Sciences; Seoul National University; Seoul 151-741 Republic of Korea