1. Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Science, State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, People’s Republic of China
2. College of Life Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
3. Section on Molecular Morphogenesis, PCRM, NICHD, NIH, Bethesda, Maryland 20892-5431, United States