1. Institute of Biochemistry and Molecular Biology, National Taiwan University, Taipei City 10617, Taiwan
2. Department of Chemistry, National Taiwan University, Taipei City 10617, Taiwan
3. Faculty of Medicine, University of Tsukuba, Ibaraki 305-8577, Japan
4. Center for Biotechnology, National Taiwan University, Taipei City 10617, Taiwan
5. Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei City 112, Taiwan