5VXY:
reference: Cryoelectron Microscopy Reconstructions of the Pseudomonas aeruginosa and Neisseria gonorrhoeae Type IV Pili at Sub-nanometer Resolution., Wang F, Coureuil M, Osinski T, Orlova A, Altindal T, Gesbert G, Nassif X, Egelman EH, Craig L, Structure. 2017 Sep 5;25(9):1423-1435.e4. doi: 10.1016/j.str.2017.07.016. PMID: 28877506

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