Role of eIF3h in Translation Initiation in Arabidopsis
Author Information
Author(s): Kim Byung-Hoon, Cai Xue, Vaughn Justin N, von Arnim Albrecht G
Primary Institution: The University of Tennessee, Knoxville
Hypothesis
eIF3h generally functions in permitting efficient initiation on 5' leaders harboring multiple uORFs.
Conclusion
The intact eIF3h protein contributes to efficient translation initiation on 5' leader sequences harboring multiple uORFs.
Supporting Evidence
- eIF3h helps maintain efficient polysome loading of mRNAs with multiple uORFs.
- Microarray analysis showed that eIF3h is responsible for the efficient translation of mRNAs carrying uORFs.
- Stable transgenic assays confirmed the role of eIF3h in translation initiation.
Takeaway
This study shows that a specific protein helps plants start making proteins from certain messages, especially when those messages have special parts that can slow things down.
Methodology
Stable reporter transgenes were used in Arabidopsis eif3h mutants to analyze translation efficiency.
Limitations
The study primarily focused on specific mRNAs and may not generalize to all mRNAs in Arabidopsis.
Statistical Information
P-Value
p<0.02
Statistical Significance
p<0.02
Digital Object Identifier (DOI)
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