1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 China
2. Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China
3. National Center for Protein Science Shanghai Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China
4. Institute of Physical Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China