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The dps promoter is activated by OxyR during growth and by IHF and σs in stationary phase
Abstract
Summary: Dps is a non‐specific DNA‐binding protein abundant In starved Escherichia coli cells and is important for the defence against hydrogen peroxide. We found that dps mRNA levels are controlled by rpoS‐encoded σ s, the transcriptional activator OxyR and the histone‐like IHF protein, in exponentially growing cells, dps is induced by treatment with hydrogen peroxide in an OxyR‐dependent manner. This OxyR‐dependent induction occurs only during log phase, although the OxyR protein is present in stationary phase, in the stationary phase cells, dps is expressed in a σ s ‐ and IHF‐dependent manner. The purified OxyR and IHF proteins are also shown to bind upstream of the dps promoter. Our results suggest that the dps promoter is recognized by both σ 70‐holoenzyme and σ s‐holoenzyme, since OxyR acts through σ 70 and the starts of the OxyR‐ and σ s‐dependent transcripts are identical.
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Citations
Cited by
Cellular Defenses against Superoxide and Hydrogen Peroxide
Imlay, J. A. (2008) · Annual Review of Biochemistry · doi:10.1146/annurev.biochem.77.061606.161055 · Cited by 1,563
The crystal structure of Dps, a ferritin homolog that binds and protects DNA
Grant, R. A., Filman, D. J., Finkel, S. E., Kolter, R., & Hogle, J. M. (1998) · Nature Structural Biology · doi:10.1038/nsb0498-294 · Cited by 560
Self-citationRömling, U., Sierralta, W. D., Eriksson, K., & Normark, S. (1998) · Molecular Microbiology · doi:10.1046/j.1365-2958.1998.00791.x · Cited by 451
A suf operon requirement for Fe–S cluster assembly during iron starvation in Escherichia coli
Outten, F. W., Djaman, O., & Storz, G. (2004) · Molecular Microbiology · doi:10.1111/j.1365-2958.2004.04025.x · Cited by 448
Self-citationIron and Hydrogen Peroxide Detoxification Properties of DNA-binding Protein from Starved Cells
Zhao, G., Ceci, P., Ilari, A., Giangiacomo, L., Laue, T. M., Chiancone, E., & Chasteen, N. D. (2002) · Journal of Biological Chemistry · doi:10.1074/jbc.m202094200 · Cited by 417
Metadata
- Authors
- Altuvia, S., Almiron, M., Huisman, G., Kolter, R., & Storz, G.
- Venue
- Molecular Microbiology
- Publisher
- Wiley
- Published
- 1994-07
- Volume
- 13
- Issue
- 2
- Pages
- 265-272
- ISSN
- 0950-382X (ISSN-L)
- 1365-2958
- OpenAlex
- W2002144817
- Cited by
- 437
- References
- 0
- FWCI
- 12.25
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: The dps promoter is activated by OxyR during growth and by IHF and σs in stationary phase. https://app.cochat.ai/papers/10.1111/j.1365-2958.1994.tb00421.x
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- Altuvia, S., Almiron, M., Huisman, G., Kolter, R., & Storz, G. (1994). The dps promoter is activated by OxyR during growth and by IHF and σs in stationary phase. Molecular Microbiology. https://doi.org/10.1111/j.1365-2958.1994.tb00421.x
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