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  • Title: The interaction of TraW and TrbC is required to facilitate conjugation in F-like plasmids.
    Author: Shala-Lawrence A, Bragagnolo N, Nowroozi-Dayeni R, Kheyson S, Audette GF.
    Journal: Biochem Biophys Res Commun; 2018 Sep 18; 503(4):2386-2392. PubMed ID: 29966652.
    Abstract:
    Bacterial conjugation, such as that mediated by the E. coli F plasmid, is a main mechanism driving bacterial evolution. Two important proteins required for F-pilus assembly and DNA transfer proficiency are TraW and TrbC. As members of a larger complex, these proteins assemble into a type IV secretion system and are essential components of pore formation and mating pair stabilization between the donor and the recipient cells. In the current report, we demonstrate the physical interaction of TraW and TrbC, show that TraW preferentially interacts with the N-terminal domain of TrbC, and that this interaction is important in restoring conjugation in traW/trbC knockouts.
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