Identification of a Novel Regulator for the Escherichia coli fit Iron Transport System
2008
Identifying a New Regulator for E. coli Iron Transport
publication
Evidence: moderate
Author Information
Author(s): Ouyang Zhiming, Isaacson Richard
Primary Institution: University of Texas Southwestern Medical Center
Hypothesis
FitR regulates the expression of the E. coli fit iron transport system.
Conclusion
FitR acts as an auto-repressor for the E. coli fit iron transport system.
Supporting Evidence
- FitR represses fit expression when over-expressed.
- fit expression is de-repressed in fitR knockout mutants.
- Recombinant FitR binds to the fit promoter DNA.
Takeaway
The study found that a protein called FitR helps control how E. coli takes in iron, acting like a switch that can turn the process on or off.
Methodology
The study used quantitative RT-PCR and lacZ reporter assays to analyze fit expression under different conditions.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website