3J1R:
reference: Filaments from Ignicoccus hospitalis Show Diversity of Packing in Proteins Containing N-Terminal Type IV Pilin Helices., Yu X, Goforth C, Meyer C, Rachel R, Wirth R, Schroder GF, Egelman EH, J Mol Biol. 2012 May 30. PMID: 22659006

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