The pH Dependence of Polymerization and Bundling by the Essential Bacterial Cytoskeltal Protein FtsZ
2011
The pH Dependence of Polymerization and Bundling by the Essential Bacterial Cytoskeletal Protein FtsZ
publication
Evidence: moderate
Author Information
Author(s): Pacheco-Gómez Raúl, Roper David I., Dafforn Timothy R., Rodger Alison
Primary Institution: University of Warwick
Hypothesis
How does pH affect the polymerization mechanism of FtsZ?
Conclusion
Lowering the pH from neutral to 6.5 facilitates the polymerization of FtsZ, resulting in longer and more abundant fibers.
Supporting Evidence
- FtsZ polymerization is a target for novel antibiotics due to its fundamental role in bacterial cell division.
- Lowering the pH to 6.5 increases the abundance of FtsZ polymers.
- At pH 6.0, FtsZ polymers are stabilized, similar to the effect of divalent cations.
Takeaway
This study shows that changing the pH can help bacteria make a key protein called FtsZ, which is important for cell division.
Methodology
The study used light scattering, linear dichroism, a phosphate release assay, and electron microscopy to analyze FtsZ polymerization at different pH levels.
Limitations
The biological relevance of the pH dependence on FtsZ polymerization remains unclear.
Digital Object Identifier (DOI)
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