Changed in translation: mRNA recoding by -1 programmed ribosomal frameshifting

Trends Biochem Sci. 2015 May;40(5):265-74. doi: 10.1016/j.tibs.2015.03.006. Epub 2015 Apr 4.

Abstract

Programmed -1 ribosomal frameshifting (-1PRF) is an mRNA recoding event commonly utilized by viruses and bacteria to increase the information content of their genomes. Recent results have implicated -1PRF in quality control of mRNA and DNA stability in eukaryotes. Biophysical experiments demonstrated that the ribosome changes the reading frame while attempting to move over a slippery sequence of the mRNA--when a roadblock formed by a folded downstream segment in the mRNA stalls the ribosome in a metastable conformational state. The efficiency of -1PRF is modulated not only by cis-regulatory elements in the mRNA but also by trans-acting factors such as proteins, miRNAs, and antibiotics. These recent results suggest a molecular mechanism and new important cellular roles for -1PRF.

Keywords: decoding; gene expression; mRNA reading frame maintenance; protein synthesis; ribosome; translation.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Frameshifting, Ribosomal / genetics*
  • Protein Biosynthesis / genetics
  • Protein Biosynthesis / physiology
  • RNA, Messenger / genetics*
  • Ribosomes / metabolism*

Substances

  • RNA, Messenger