1. Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C
2. Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan R.O.C
3. Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan R.O.C
4. Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan R.O.C