1. School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, People’s Republic of China
2. Laboratory for Structural Biology of Infection and Inflammation, Institute of Biochemistry and Molecular Biology, c/o DESY, Building 22a, Notkestr. 85, Hamburg 22607, Germany
3. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, People’s Republic of China
4. Food Safety Key Lab of Zhejiang Province, The School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People’s Republic of China
5. Laboratory of Membrane Proteins and Structural Biology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, United States