Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity

Weber H, Polen T, Heuveling J, Wendisch VF, Hengge R (2005)
Journal of Bacteriology 187(5): 1591-1603.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
The sigma(s) (or RpoS) subunit of RNA polymerase is the master regulator of the general stress response in Escherichia coli. While nearly absent in rapidly growing cells, us is strongly induced during entry into stationary phase and/or many other stress conditions and is essential for the expression of multiple stress resistances. Genome-wide expression profiling data presented here indicate that up to 10% of the E. coli genes are under direct or indirect control of us and that us should be considered a second vegetative sigma factor with a major impact not only on stress tolerance but on the entire cell physiology under nonoptimal growth conditions. This large data set allowed us to unequivocally identify a us consensus promoter in silico. Moreover, our results suggest that us-dependent genes represent a regulatory network with complex internal control (as exemplified by the acid resistance genes). This network also exhibits extensive regulatory overlaps with other global regulons (e.g., the cyclic AMP receptor protein regulon). In addition, the global regulatory protein Lrp was found to affect sigma(s) and/or sigma(70) selectivity of many promoters. These observations indicate that certain modules of the us-dependent general stress response can be temporarily recruited by stress-specific regulons, which are controlled by other stress-responsive regulators that act together with sigma(70) RNA polymerase. Thus, not only the expression of genes within a regulatory network but also the architecture of the network itself can be subject to regulation.
Erscheinungsjahr
Zeitschriftentitel
Journal of Bacteriology
Band
187
Zeitschriftennummer
5
Seite
1591-1603
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Weber H, Polen T, Heuveling J, Wendisch VF, Hengge R. Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity. Journal of Bacteriology. 2005;187(5):1591-1603.
Weber, H., Polen, T., Heuveling, J., Wendisch, V. F., & Hengge, R. (2005). Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity. Journal of Bacteriology, 187(5), 1591-1603. doi:10.1128/Jb.1875.5.1591-1603.2005
Weber, H., Polen, T., Heuveling, J., Wendisch, V. F., and Hengge, R. (2005). Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity. Journal of Bacteriology 187, 1591-1603.
Weber, H., et al., 2005. Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity. Journal of Bacteriology, 187(5), p 1591-1603.
H. Weber, et al., “Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity”, Journal of Bacteriology, vol. 187, 2005, pp. 1591-1603.
Weber, H., Polen, T., Heuveling, J., Wendisch, V.F., Hengge, R.: Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity. Journal of Bacteriology. 187, 1591-1603 (2005).
Weber, H., Polen, T., Heuveling, J., Wendisch, Volker F., and Hengge, R. “Genome-wide analysis of the general stress response network in Escherichia coli: sigma(S)-dependent genes, promoters, and sigma factor selectivity”. Journal of Bacteriology 187.5 (2005): 1591-1603.

381 Zitationen in Europe PMC

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