The ClpX protein of Bacillus subtilis indirectly influences RNA polymerase holoenzyme composition and directly stimulates sigma-dependent transcription.

Abstract excerpt

In Bacillus subtilis, several processes associated with the onset of stationary phase, including the initiation of sporulation, require the activity of the minor sigmaH form of RNA polymerase (RNAP). The induction of sigmaH-dependent gene transcription requires the regulatory ATPase, ClpX. The ClpX-dependent post-exponential increase in sigmaH activity is not dependent on the activator of sporulation gene...

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