Identification of a Guanine Nucleotide Exchange Factor for Arf3, the Yeast Orthologue of Mammalian Arf6 Yel1 Is a GEF for Arf3
2007
Identifying a Protein That Helps Yeast Cells Grow
publication
Evidence: moderate
Author Information
Author(s): Gillingham Alison K., Munro Sean, Riezman Howard
Primary Institution: Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom
Hypothesis
Is Yel1 a guanine nucleotide exchange factor for the yeast protein Arf3?
Conclusion
Yel1 is identified as a guanine nucleotide exchange factor specifically for Arf3 in yeast.
Supporting Evidence
- Yel1 is required for the localization of Arf3 to the plasma membrane.
- Yel1 co-localizes with Arf3 at sites of polarized growth.
- The Sec7 domain of Yel1 is necessary for its membrane targeting.
Takeaway
Scientists found a protein in yeast that helps another protein, Arf3, do its job better, which is important for how yeast cells grow.
Methodology
The study used yeast genetics, fluorescence microscopy, and in vitro nucleotide exchange assays to characterize Yel1.
Limitations
The study primarily focuses on yeast and may not directly translate to other organisms.
Digital Object Identifier (DOI)
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