High-Resolution X-Ray Structure of the Trimeric Scar/WAVE-Complex Precursor Brk1
2011
Structure of the Brk1 Protein in the Scar/WAVE Complex
publication
Evidence: high
Author Information
Author(s): Linkner Joern, Witte Gregor, Stradal Theresia, Curth Ute, Faix Jan
Primary Institution: Institute for Biophysical Chemistry, Hannover Medical School, Hannover, Germany
Hypothesis
How does the Brk1 protein function as a precursor in the assembly of the Scar/WAVE-complex?
Conclusion
The study reveals that Brk1 forms stable trimers and plays a critical role in the assembly of the Scar/WAVE-complex.
Supporting Evidence
- Brk1 is stable outside the Scar/WAVE-complex and can persist without other subunits.
- Brk1 forms homotrimers in solution, indicating its role in the assembly process.
- The crystal structure of Brk1 shows a parallel triple coiled-coil bundle.
Takeaway
Brk1 is like a building block that helps put together a team of proteins needed for cell movement.
Methodology
The researchers used analytical ultracentrifugation and X-ray crystallography to study the structure and stability of Brk1.
Digital Object Identifier (DOI)
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