1. Graduate School of Analytical Science & Technology, Chungnam National University, Daejeon 305–764, South Korea
2. Biochemicals & Synthetic Biology Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), 125 Gwahakro, Yuseong-gu, Daejeon 305–806, South Korea
3. SKKU Advanced Institute of Nanotechnology (SAINT), School of Chemical Engineering, Sungkyunkwan University, Suwon 440–746, South Korea