An atypical receiver domain controls the dynamic polar localization of the Myxococcus xanthus social motility protein FrzS
2007
FrzS Protein's Role in Bacterial Movement
publication
10 minutes
Evidence: high
Author Information
Author(s): Fraser James S, Merlie John P Jr, Echols Nathaniel, Weisfield Shellie R, Mignot Tâm, Wemmer David E, Zusman David R, Alber Tom
Primary Institution: University of California Berkeley
Hypothesis
Does the FrzS receiver domain's structure and function depend on phosphorylation like canonical response regulators?
Conclusion
The FrzS receiver domain does not require phosphorylation for its function in social motility.
Supporting Evidence
- The FrzS protein's localization is crucial for bacterial movement.
- Mutations in key residues of FrzS disrupt its function without affecting protein levels.
- FrzS does not bind Mg2+ or the phosphoryl analogue, indicating it does not undergo typical phosphorylation.
Takeaway
The FrzS protein helps bacteria move by changing where it is located in the cell, and it doesn't need a special chemical change to do its job.
Methodology
The study used atomic-resolution crystallography, NMR, and fluorescence microscopy to analyze the FrzS protein and its mutations.
Digital Object Identifier (DOI)
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