1 MOE Key Laboratory of Protein Sciences, School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, China.
2 MOE Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China.
3 Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China.
4 Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing, China.
5 MOE Key Laboratory of Protein Sciences, School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, China. yrao@tsinghua.edu.cn.