1. MOE Key Laboratory of Protein Sciences, School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, P. R. China
2. Tsinghua-Peking Center for Life Sciences, Haidian District, Beijing 100084, China
3. Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, Massachusetts 02115, United States