Related Experiment Video
Updated: Jul 3, 2026

Transient Expression in Nicotiana Benthamiana Leaves for Triterpene Production at a Preparative Scale
Published on: August 16, 2018
Cotranslational disassembly increases the efficiency of expression of TMV RNA in wheat germ cell-free extracts
1Department of Virus Research, John Innes Institute, Colney Lane, Norwich NR4 7UH, United Kingdom.
Abstract:
Cotranslational disassembly of tobacco mosaic virus (TMV) particles in the rabbit reticulocyte lysate has recently been demonstrated (T.M.A. Wilson, Virology, in press). A similar phenomenon in wheat germ extracts is now reported. However, in contrast to the reticulocyte lysate, wheat germ cell-free extracts respond approximately three times more efficiently to pH 8 treated TMV particles than to conventional TMV RNA templates prepared by phenol extraction. Dose-response curves indicate that this behaviour is reproducible over a wide range of exogenous RNA or virus concentrations (equivalent to 6 to 400 microg/ml RNA). Enhanced synthesis of the large (126K) virus-specific polypeptide is observed in translations programmed with virus particles. These results probably reflect the protective influence of the capsid protein during protein synthesis in a cell-free extract containing ribonuclease activity. This environment may be similar to that which confronts the virus within the cells of infected host plants.
More Related Videos
10:52Efficient and Scalable Production of Full-length Human Huntingtin Variants in Mammalian Cells using a Transient Expression System
Published on: December 10, 2021
04:04Real-Time Quantification of the Effects of IS200/IS605 Family-Associated TnpB on Transposon Activity
Published on: January 20, 2023
Related Concept Videos
Improving Translational Accuracy
Leaky Scanning
Cotranslational Protein Translocation
Sec61 channel partners for cotranslational translocation
During cotranslational translocation, the Sec61 channel partners with the signal recognition particle (SRP), the signal recognition particle receptor (SR), and the ribosomes to transport the nascent polypeptide chain...
Protein Complex Assembly
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Coordination of Gene Expression Processes in Bacteria
Initiation of Translation
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...