The Rhodobacter sphaeroides ECF sigma factor, sigma(E), and the target promoters cycA P3 and rpoE P1.

@article{Newman1999TheRS,
  title={The Rhodobacter sphaeroides ECF sigma factor, sigma(E), and the target promoters cycA P3 and rpoE P1.},
  author={Jack D. Newman and Michael J. Falkowski and Brenda A. Schilke and Larry C. Anthony and Timothy J. Donohue},
  journal={Journal of molecular biology},
  year={1999},
  volume={294 2},
  pages={307-20}
}
Rhodobacter sphaeroides rpoE encodes a 19.2 kDa protein, sigma(E), related to members of the extra-cytoplasmic function subfamily of eubacterial RNA polymerase sigma factors. We demonstrate that sigma(E) directs transcription from rpoE P1, the promoter for the rpoEchrR operon, and from cycA P3, a promoter for the cytochrome c2 structural gene. Comparison of these sigma(E)-dependent promoters reveals significant sequence conservation in their -35 and -10 regions; however, rpoE P1 is over 80-fold… CONTINUE READING

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