PMID: 8980488Oct 1, 1996Paper

Gene expression from viral RNA genomes

Plant Molecular Biology
I G MaiaF Bernardi

Abstract

This review is centered on the major strategies used by plant RNA viruses to produce the proteins required for virus multiplication. The strategies at the level of transcription presented here are synthesis of mRNA or subgenomic RNAs from viral RNA templates, and 'cap-snatching'. At the level of translation, several strategies have been evolved by viruses at the steps of initiation, elongation and termination. At the initiation step, the classical scanning mode is the most frequent strategy employed by viruses; however in a vast number of cases, leaky scanning of the initiation complex allows expression of more than one protein from the same RNA sequence. During elongation, frameshift allows the formation of two proteins differing in their carboxy terminus. At the termination step, suppression of termination produces a protein with an elongated carboxy terminus. The last strategy that will be described is co- and/or post-translational cleavage of a polyprotein precursor by virally encoded proteinases. Most (+)-stranded RNA viruses utilize a combination of various strategies.

References

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Citations

Feb 12, 2000·Biochimica Et Biophysica Acta·M W Kennedy
Sep 29, 2006·Journal of Virology·Rafal WierzchoslawskiJozef J Bujarski
Jun 14, 2000·Journal of Virology·G Koev, W A Miller
Sep 8, 2001·The Journal of Biological Chemistry·I R ChoiK A White
Nov 21, 2001·The Journal of Biological Chemistry·Il-Ryong Choi, K Andrew White
Aug 17, 2018·G3 : Genes - Genomes - Genetics·Victor GarciaMaria Anisimova
Jul 24, 2012·Toxins·Frank SainsburyDominique Michaud
Jun 19, 2021·Virus Evolution·Jordan DouglasRichard L Kingston

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