PMID:15372272

Citation	Gomes, AA, Asad, LM, Felzenszwalb, I, Leitão, AC, Silva, AB, Guillobel, HC and Asad, NR (2004) Does UVB radiation induce SoxS gene expression in Escherichia coli cells? Radiat Environ Biophys 43:219-22
Abstract	The SoxRS regulon is induced when bacterial cells are exposed to redox-cycling agents such as menadione or paraquat. In this paper it is shown that a physical agent, such as ultraviolet radiation with a wavelength of 312 nm (UVB) can induce soxS gene expression. The results indicate that this induction involves the RpoS protein. Moreover, an unexpected increase of soxS gene expression independent of a functional soxR gene in UVB-irradiated cells has been verified. This increase could be explained by transcription of soxS gene in a rpoS-dependent pathway.
Links	PubMed Online version:10.1007/s00411-004-0253-8
Keywords	Bacterial Proteins/metabolism; Cell Survival/radiation effects; Dose-Response Relationship, Radiation; Escherichia coli/cytology; Escherichia coli/physiology; Escherichia coli/radiation effects; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Gene Expression Regulation, Bacterial/radiation effects; Oxidative Stress/physiology; Oxidative Stress/radiation effects; Radiation Dosage; Sigma Factor/metabolism; Trans-Activators/genetics; Trans-Activators/metabolism; Ultraviolet Rays
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