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The bacterium Escherichia coli has seven σ subunits that bind core RNA polymerase and are necessary for promoter recognition. It was previously shown that the σ70 and σ38 subunits can also interact with the transcription elongation complex (TEC) and stimulate pausing by recognizing DNA sequences similar to the–10 element of promoters. In this study, we analyzed the ability of the σ32, σ28, and σ24...
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