1. Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, P. R. China
2. Department of Chemistry, Yale University, New Haven, CT, USA
3. Department of Chemistry, University at Albany, State University of New York, NY, USA
4. Institute of Health Sciences, Shanghai Jiaotong University School of Medicine/Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences, Xuhui District, Shanghai, P. R. China