The Translation Initiation Factor eIF4E Regulates the Sex-Specific Expression of the Master Switch Gene Sxl in Drosophila melanogaster
2011
eIF4E's Role in Drosophila Sex Determination
publication
Evidence: high
Author Information
Author(s): Graham Patricia L., Yanowitz Judith L., Penn Jill K. M., Deshpande Girish, Schedl Paul
Primary Institution: Princeton University
Hypothesis
eIF4E is required for the female-specific splicing of the Sxl gene in Drosophila melanogaster.
Conclusion
eIF4E is essential for the proper splicing of Sxl and msl-2 pre-mRNAs, which is critical for female sex determination in Drosophila.
Supporting Evidence
- eIF4E is associated with Sxl pre-mRNAs, indicating its role in splicing.
- Mutations in eif4e lead to female lethality, suggesting its importance in sex determination.
- eIF4E is required for the stable activation of the Sxl positive autoregulatory feedback loop.
Takeaway
In fruit flies, a protein called eIF4E helps control how genes are turned on or off, especially for determining if the fly will be male or female.
Methodology
The study involved genetic screens and molecular analyses to investigate the role of eIF4E in splicing regulation.
Digital Object Identifier (DOI)
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