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PqsE enhances RhlR:mBTL affinity for promoter DNA. EMSA of the rhlA promoter with purified PqsE (left), RhlR:mBTL (middle), and PqsE-RhlR:mBTL (right). “Ub” signifies DNA probe unbound by protein and “b” signifies DNA probe bound by protein. SDS-PAGE showing protein levels in the samples is provided below the corresponding EMSA results.
