Regulation of Translation by TOR, eIF4E and eIF2 alpha in Plants: Current Knowledge, Challenges and Future Perspectives

Ane Sesma, Carmen Castresana, M. Mar Castellano

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19 Citations (Scopus)
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Abstract

An important step in eukaryotic gene expression is the synthesis of proteins from mRNA, a process classically divided into three stages, initiation, elongation, and termination. Translation is a precisely regulated and conserved process in eukaryotes. The presence of plant-specific translation initiation factors and the lack of well-known translational regulatory pathways in this kingdom nonetheless indicate how a globally conserved process can diversify among organisms. The control of protein translation is a central aspect of plant development and adaptation to environmental stress, but the mechanisms are still poorly understood. Here we discuss current knowledge of the principal mechanisms that regulate translation initiation in plants, with special attention to the singularities of this eukaryotic kingdom. In addition, we highlight the major recent breakthroughs in the field and the main challenges to address in the coming years.

Original languageEnglish
Article number644
Number of pages7
JournalFrontiers in Plant Science
Volume8
DOIs
Publication statusPublished - 26 Apr 2017

Keywords

  • translation initiation
  • stress
  • plant development
  • TOR
  • eIF2 alpha
  • eIF4E
  • MESSENGER-RNA TRANSLATION
  • CAP-DEPENDENT TRANSLATION
  • INITIATION-FACTOR 4E
  • ARABIDOPSIS-THALIANA
  • KINASE GCN2
  • PROMOTE TRANSLATION
  • BINDING PROTEIN
  • GROWTH
  • YEAST
  • PHOSPHORYLATION

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