Methylation of translation elongation factor 1A by the METTL10-like See1 methyltransferase facilitates tombusvirus replication in yeast and plants

Zhenghe Li, Paulina Alatriste Gonzalez, Zsuzsanna Sasvari, Terri Goss Kinzy, Peter D. Nagy

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Replication of tombusviruses and other plus-strand RNA viruses depends on several host factors that are recruited into viral replicase complexes. Previous studies have shown that eukaryotic translation elongation factor 1A (eEF1A) is one of the resident host proteins in the highly purified tombusvirus replicase complex. In this paper, we show that methylation of eEF1A by the METTL10-like See1p methyltransferase is required for tombusvirus and unrelated nodavirus RNA replication in yeast model host. Similar to the effect of SEE1 deletion, yeast expressing only a mutant form of eEF1A lacking the 4 known lysines subjected to methylation supported reduced TBSV accumulation. We show that the half-life of several viral replication proteins is decreased in see1δ yeast or when a mutated eEF1A was expressed as a sole source for eEF1A. Silencing of the plant ortholog of See1 methyltransferase also decreased tombusvirus RNA accumulation in Nicotiana benthamiana.

Original languageEnglish
Pages (from-to)43-54
Number of pages12
JournalVirology
Volume448
DOIs
StatePublished - Jan 5 2014

Bibliographical note

Funding Information:
The authors thank Drs. D. Barajas and J. Pogany for valuable comments. This research was supported by the National Science Foundation ( MCB-1122039 ), and the Kentucky Science Foundation to PDN .

Keywords

  • Host factor
  • Methyltransferase
  • Nodaviruses
  • Plant
  • Posttranslational modification
  • Replication
  • Tomato bushy stunt virus
  • Tombusviruses
  • Translation elongation factor 1A
  • Virus-host interaction
  • Yeast

ASJC Scopus subject areas

  • Virology

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