6XFJ:
reference: Characterization of the Pilotin-Secretin Complex from the Salmonella enterica Type III Secretion System Using Hybrid Structural Methods., Majewski DD, Okon M, Heinkel F, Robb CS, Vuckovic M, McIntosh LP, Strynadka NCJ, Structure. 2020 Aug 27. pii: S0969-2126(20)30288-4. doi:, 10.1016/j.str.2020.08.006. PMID: 32877645

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