6J0C:
reference: Cryo-EM Structure and Assembly of an Extracellular Contractile Injection System., Jiang F, Li N, Wang X, Cheng J, Huang Y, Yang Y, Yang J, Cai B, Wang YP, Jin Q, Gao N, Cell. 2019 Apr 4;177(2):370-383.e15. doi: 10.1016/j.cell.2019.02.020. Epub 2019, Mar 21. PMID: 30905475

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