Modus operandi of the bacterial RNA polymerase containing the sigma(54) promoter-specificity factor
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Bacterial sigma (sigma) factors confer gene specificity upon the RNA polymerase, the central enzyme that catalyses gene transcription. The binding of the alternative sigma factor sigma(54) confers upon the RNA polymerase special functional and regulatory properties, making it suited for control of several major adaptive responses. Here, we summarize our current understanding of the interactions the sigma(54) factor makes with the bacterial transcription machinery.
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MOLECULAR MICROBIOLOGY, 2008, 68 pp. 538 - 546