3QS2:
reference: Structural insights into the biogenesis and biofilm formation by the Escherichia coli common pilus., Garnett JA, Martinez-Santos VI, Saldana Z, Pape T, Hawthorne W, Chan J, Simpson PJ, Cota E, Puente JL, Giron JA, Matthews S, Proc Natl Acad Sci U S A. 2012 Mar 6;109(10):3950-5. Epub 2012 Feb 21. PMID: 22355107

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