Abstract
A recombinant bioluminescent Escherichia coli strain, EBHJ, (sodA::luxCDABE), containing the promoter for the manganese superoxide dismutase (sodA) gene fused to the Vibrio fischeri luxCDABE operon, was successfully constructed and characterized. Redox-cycling agents, such as paraquat and chromium, strongly induced a sodA- regulated response in dose-dependent manners, resulting in an increase of the bioluminescence. In a comparison with an existing oxidative stress responsive strain, DPD2511 (katG::luxCDABE), which is sensitive to H2O2, the mechanism of chemicals that cause oxidative damage was elucidated via the key transcriptional factors involved in induction of the sodA and katG promoters, i.e. SoxRS and OxyR, respectively. It was found that responses from the katG- and sodA-based strains were significantly different dependent upon the chemicals being tested. Therefore, EBHJ, alone or in parallel with DPD2511, can be used to characterize and monitor chemicals that cause oxidative damage.
| Original language | English |
|---|---|
| Pages (from-to) | 577-580 |
| Number of pages | 4 |
| Journal | Applied Microbiology and Biotechnology |
| Volume | 60 |
| Issue number | 5 |
| Publication status | Published - 2003 Jan 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Biotechnology
- Microbiology
- Bioengineering
Cite this
Construction of a sodA : :luxCDABE fusion Escherichia coli: Comparison with a katG fusion strain through their responses to oxidative stresses. / Lee, H. J.; Gu, Man Bock.
In: Applied Microbiology and Biotechnology, Vol. 60, No. 5, 01.01.2003, p. 577-580.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Construction of a sodA
T2 - :luxCDABE fusion Escherichia coli: Comparison with a katG fusion strain through their responses to oxidative stresses
AU - Lee, H. J.
AU - Gu, Man Bock
PY - 2003/1/1
Y1 - 2003/1/1
N2 - A recombinant bioluminescent Escherichia coli strain, EBHJ, (sodA::luxCDABE), containing the promoter for the manganese superoxide dismutase (sodA) gene fused to the Vibrio fischeri luxCDABE operon, was successfully constructed and characterized. Redox-cycling agents, such as paraquat and chromium, strongly induced a sodA- regulated response in dose-dependent manners, resulting in an increase of the bioluminescence. In a comparison with an existing oxidative stress responsive strain, DPD2511 (katG::luxCDABE), which is sensitive to H2O2, the mechanism of chemicals that cause oxidative damage was elucidated via the key transcriptional factors involved in induction of the sodA and katG promoters, i.e. SoxRS and OxyR, respectively. It was found that responses from the katG- and sodA-based strains were significantly different dependent upon the chemicals being tested. Therefore, EBHJ, alone or in parallel with DPD2511, can be used to characterize and monitor chemicals that cause oxidative damage.
AB - A recombinant bioluminescent Escherichia coli strain, EBHJ, (sodA::luxCDABE), containing the promoter for the manganese superoxide dismutase (sodA) gene fused to the Vibrio fischeri luxCDABE operon, was successfully constructed and characterized. Redox-cycling agents, such as paraquat and chromium, strongly induced a sodA- regulated response in dose-dependent manners, resulting in an increase of the bioluminescence. In a comparison with an existing oxidative stress responsive strain, DPD2511 (katG::luxCDABE), which is sensitive to H2O2, the mechanism of chemicals that cause oxidative damage was elucidated via the key transcriptional factors involved in induction of the sodA and katG promoters, i.e. SoxRS and OxyR, respectively. It was found that responses from the katG- and sodA-based strains were significantly different dependent upon the chemicals being tested. Therefore, EBHJ, alone or in parallel with DPD2511, can be used to characterize and monitor chemicals that cause oxidative damage.
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M3 - Article
C2 - 12536259
AN - SCOPUS:0037255508
VL - 60
SP - 577
EP - 580
JO - Applied Microbiology and Biotechnology
JF - Applied Microbiology and Biotechnology
SN - 0175-7598
IS - 5
ER -