Effects of SO1377 Gene Knockout on Iron Metabolism in Shewanella oneidensis MR-1
Author Information
Author(s): Gao Weimin, Liu Yongqing, Giometti Carol S, Tollaksen Sandra L, Khare Tripti, Wu Liyou, Klingeman Dawn M, Fields Matthew W, Zhou Jizhong
Primary Institution: Environmental Sciences Division, Oak Ridge National Laboratory
Hypothesis
The knockout of the SO1377 gene will affect iron metabolism and oxidative stress responses in Shewanella oneidensis MR-1.
Conclusion
The knockout of the SO1377 gene resulted in decreased growth under aerobic conditions, altered iron metabolism, increased sensitivity to hydrogen peroxide, and a higher rate of spontaneous mutations.
Supporting Evidence
- The deletion mutant had a decreased growth rate when cultured aerobically.
- The level of free iron in mutant cells was three times less than that of the wild-type strain.
- The mutant was more sensitive to hydrogen peroxide treatment.
- The knockout led to a higher rate of spontaneous mutations compared to the wild-type strain.
Takeaway
Scientists removed a gene from a bacterium to see what would happen, and they found that it made the bacteria grow slower and more sensitive to stress.
Methodology
The study involved generating a deletion mutant of the SO1377 gene and analyzing its growth, gene expression, and protein profiles compared to the wild-type strain.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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