1. Beijing Advanced Innovation Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China
2. Beijing Frontier Research Center for Biological Structure, Tsinghua University, Beijing 100084, China
3. Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
4. Technology Center for Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China