TraY and integration host factor oriT binding sites and F conjugal transfer: sequence variations, but not altered spacing, are tolerated.

Abstract excerpt

Bacterial conjugation is the process by which a single strand of a conjugative plasmid is transferred from donor to recipient. For F plasmid, TraI, a relaxase or nickase, binds a single plasmid DNA strand at its specific origin of transfer (oriT) binding site, sbi, and cleaves at a site called nic. In vitro studies suggest TraI is recruited to sbi by its accessory proteins, TraY and integration host factor (IHF)....

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