3OHN:
reference: Crystal structure of the FimD usher bound to its cognate FimC-FimH substrate., Phan G, Remaut H, Wang T, Allen WJ, Pirker KF, Lebedev A, Henderson NS, Geibel S, Volkan E, Yan J, Kunze MB, Pinkner JS, Ford B, Kay CW, Li H, Hultgren SJ, Thanassi DG, Waksman G, Nature. 2011 Jun 2;474(7349):49-53. PMID: 21637253

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