1. Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
2. Key Laboratory of Pharmaceutical Biotechnology of Shanxi Provence, Shanxi, Taiyuan 030006, China
3. Department of Chemistry, University of Memphis, Memphis, Tennessee 38152, United States
4. RIKEN Center for Biosystems Dynamics Research, Yokohama, Kanagawa 230-0045, Japan