Activity of Rhodobacter sphaeroides RpoHII, a second member of the heat shock sigma factor family.

@article{Green2006ActivityOR,
  title={Activity of Rhodobacter sphaeroides RpoHII, a second member of the heat shock sigma factor family.},
  author={Heather A. Green and Timothy J. Donohue},
  journal={Journal of bacteriology},
  year={2006},
  volume={188 16},
  pages={5712-21}
}
We have identified a second RpoH homolog, RpoH(II), in the alpha-proteobacterium Rhodobacter sphaeroides. Primary amino acid sequence comparisons demonstrate that R. sphaeroides RpoH(II) belongs to a phylogenetically distinct group with RpoH orthologs from alpha-proteobacteria that contain two rpoH genes. Like its previously identified paralog, RpoH(I), RpoH(II) is able to complement the temperature-sensitive phenotype of an Escherichia coli sigma(32) (rpoH) mutant. In addition, we show that… CONTINUE READING
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