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Cited by 53

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Staphylococcus aureus SarA is a regulatory protein responsive to redox and pH that can support bacteriophage lambda integrase‐mediated excision/recombination

Fujimoto, David F., Higginbotham, Robin H., Sterba, Kristen M., Maleki, Soheila J., Segall, Anca M., Smeltzer, Mark S., Hurlburt, Barry K.·2009·Molecular Microbiology
DOI 10.1111/j.1365-2958.2009.06942.x
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Abstract

Summary: Staphylococcus aureus produces a wide array of virulence factors and causes a correspondingly diverse array of infections. Production of these virulence factors is under the control of a complex network of global regulatory elements, one of which is sarA . sarA encodes a DNA binding protein that is considered to function as a transcription factor capable of acting as either a repressor or an activator. Using competitive ELISA assays, we demonstrate that SarA is present at approximately 50 000 copies per cell, which is not characteristic of classical transcription factors. We also demonstrate that SarA is present at all stages of growth in vitro and is capable of binding DNA with high affinity but that its binding affinity and pattern of shifted complexes in electrophoretic mobility shift assays is responsive to the redox state. We also show that SarA binds to the bacteriophage lambda (λ) attachment site, attL , producing SarA‐DNA complexes similar to intasomes, which consist of bacteriophage lambda integrase, Escherichia coli integration host factor and attL DNA. In addition, SarA stimulates intramolecular excision recombination in the absence of λ excisionase, a DNA binding accessory protein. Taken together, these data suggest that SarA may function as an architectural accessory protein.

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Metadata

Authors
Fujimoto, D. F., Higginbotham, R. H., Sterba, K. M., Maleki, S. J., Segall, A. M., Smeltzer, M. S., & Hurlburt, B. K.
Venue
Molecular Microbiology
Publisher
Wiley
Published
2009-12
Volume
74
Issue
6
Pages
1445-1458
ISSN
  • 0950-382X
  • 1365-2958
DOI
10.1111/j.1365-2958.2009.06942.x
Cited by
53
References
1
Language
en
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)

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CoChat. (2026). Citation check: Staphylococcus aureus SarA is a regulatory protein responsive to redox and pH that can support bacteriophage lambda integrase‐mediated excision/recombination. https://app.cochat.ai/papers/10.1111/j.1365-2958.2009.06942.x
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Fujimoto, D. F., Higginbotham, R. H., Sterba, K. M., Maleki, S. J., Segall, A. M., Smeltzer, M. S., & Hurlburt, B. K. (2009). Staphylococcus aureus SarA is a regulatory protein responsive to redox and pH that can support bacteriophage lambda integrase‐mediated excision/recombination. Molecular Microbiology. https://doi.org/10.1111/j.1365-2958.2009.06942.x

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