3RQ9:
reference: Structural Basis for Type VI Secretion Effector Recognition by a Cognate Immunity Protein., Li M, Le Trong I, Carl MA, Larson ET, Chou S, De Leon JA, Dove SL, Stenkamp RE, Mougous JD, PLoS Pathog. 2012 Apr;8(4):e1002613. Epub 2012 Apr 12. PMID: 22511866

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