Abstract
Panicum mosaic virus (PMV) is a single-stranded positive-sense RNA virus in the family Tombusviridae. PMV genomic RNA (gRNA) and subgenomic RNA (sgRNA) are not capped or polyadenylated. We have determined that PMV uses a cap-independent mechanism of translation. A 116-nucleotide translational enhancer (TE) region on the 3′-untranslated region of both the gRNA and sgRNA has been identified. The TE is required for efficient translation of viral proteins in vitro. For mutants with a compromised TE, addition of cap analog, or transposition of the cis-active TE to another location, both restored translational competence of the 5′-proximal sgRNA genes in vitro.
Original language | English |
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Pages (from-to) | 2591-2597 |
Number of pages | 7 |
Journal | FEBS Letters |
Volume | 580 |
Issue number | 11 |
DOIs | |
State | Published - 2006/05/15 |
Keywords
- 3-untranslated region
- Cap-independent translation
- Panicovirus
- RNA structure
- Translation strategies
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology