Dna

RNA polymerase is released NusA from DNA

^poiyme^

Free for Sigma recognition

Sigma displaces NusA

FIGURE 9.27 Sigma NusA Cycle of RNA Polymerase

RNA poly merase needs the sigma subunit to recognize and bind to the promoter. Once RNA polymerase moves forward and starts transcribing, it releases sigma and picks up NusA protein. After termination, NusA protein is displaced by sigma.

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