The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
RPS25 is essential for translation initiation by the Dicistroviridae and hepatitis C viral IRESs
Open accessAbstract
Most eukaryotic mRNAs are translated using a cap-dependent mechanism of translation. However, ∼10% of mammalian mRNAs initiate translation using a cap-independent mechanism that is not well understood. These mRNAs contain an internal ribosome entry site (IRES) located in the 5′ untranslated region. The cricket paralysis virus (CrPV) intergenic region IRES (IGR IRES) functions in yeast, mammals, and plants, and does not require any translation initiation factors. We used yeast genetics to understand how ribosomes are recruited directly to the mRNA by an IRES. We found that Rps25p has an essential role in CrPV IGR IRES activity in yeast and mammalian cells but not in cap-dependent translation. Purified 40S ribosomal subunits lacking Rps25 are unable to bind to the IGR IRES in vitro. The hepatitis C virus (HCV) IRES also requires Rps25, demonstrating the function of Rps25 is conserved across IRES types. Yeast strains lacking Rps25 exhibit only slight defects in global translation, readthrough, ribosome biogenesis, and programmed ribosomal frameshifting. This work is the first demonstration of a ribosomal protein that is specifically required for IRES-mediated translation initiation. Our findings provide us with the beginnings of a model for the molecular interactions of an IRES with the ribosome.
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Cites
Functional Characterization of the S. cerevisiae Genome by Gene Deletion and Parallel Analysis
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Functional 5′ UTR mRNA structures in eukaryotic translation regulation and how to find them
Leppek, K., Das, R., & Barna, M. (2018) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm.2017.103 · Cited by 949
Translational Control in Cancer Etiology
Ruggero, D. (2013) · Cold Spring Harbor Perspectives in Biology · doi:10.1101/cshperspect.a012336 · Cited by 367
A Systematic Mammalian Genetic Interaction Map Reveals Pathways Underlying Ricin Susceptibility
Bassik, M. C., Kampmann, M., Lebbink, R. J., Wang, S., Hein, M. Y., Poser, I., Weibezahn, J., Horlbeck, M. A., Chen, S., Mann, M., et al. (2013) · Cell · doi:10.1016/j.cell.2013.01.030 · Cited by 365
IRES Trans-Acting Factors, Key Actors of the Stress Response
Godet, A.-C., David, F., Hantelys, F., Tatin, F., Lacazette, E., Garmy-Susini, B., & Prats, A.-C. (2019) · International Journal of Molecular Sciences · doi:10.3390/ijms20040924 · Cited by 202
Gebauer, F., & Hentze, M. W. (2016) · Science · doi:10.1126/science.aad8540 · Cited by 11
Metadata
- Authors
- Landry, D. M., Hertz, M. I., & Thompson, S. R.
- Venue
- Genes & Development
- Publisher
- Cold Spring Harbor Laboratory
- Published
- 2009-12-01
- Volume
- 23
- Issue
- 23
- Pages
- 2753-2764
- ISSN
- 0890-9369 (ISSN-L)
- 1549-5477
- OpenAlex
- W2161944885
- Cited by
- 197
- References
- 3
- Type
- posted content
- Language
- en
- Open access
- diamond
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- Landry, D. M., Hertz, M. I., & Thompson, S. R. (2009). RPS25 is essential for translation initiation by the Dicistroviridae and hepatitis C viral IRESs. Genes & Development. https://doi.org/10.1101/gad.1832209
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