Show how you could use DNase I footprinting to demonstrate that a sigma ($\sigma$) factor is required for specific binding of RNA polymerase to a bacterial gene promoter.

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The Answer of Show how you could use DNase I footprinting to demonstrate that a sigma ($\sigma$) factor is required for specific binding of RNA polymerase to a bacterial gene promoter.

Show How You Could Use DNase I Footprinting to Demonstrate σ\sigmaσ

Show How You Could Use DNase I Footprinting to Demonstrate $\sigma$