A translational enhancer element on the 3′-proximal end of the Panicum mosaic virus genome

Jeffrey S. Batten, Benedicte Desvoyes, Yoshimi Yamamura, Karen Beth G. Scholthof*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

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 languageEnglish
Pages (from-to)2591-2597
Number of pages7
JournalFEBS Letters
Volume580
Issue number11
DOIs
StatePublished - 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

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