3E4B:
reference: AlgK is a TPR-containing protein and the periplasmic component of a novel exopolysaccharide secretin., Keiski CL, Harwich M, Jain S, Neculai AM, Yip P, Robinson H, Whitney JC, Riley L, Burrows LL, Ohman DE, Howell PL, Structure. 2010 Feb 10;18(2):265-73. PMID: 20159471

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