Related Experiment Video
Updated: Mar 19, 2026

08:58
In Vitro Transcribed RNA-based Luciferase Reporter Assay to Study Translation Regulation in Poxvirus-infected Cells
Published on: May 1, 2019
15.7K
Stress Beyond Translation: Poxviruses and More
1Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas. JWLiem@uams.edu.
Viruses
|June 18, 2016
Summary
Poxviruses manipulate host translation, forming antiviral granules (AVGs) similar to stress granules (SGs). These AVGs may be linked to viral sensing and reprogramming cellular functions during infection.
Area of Science:
- Virology
- Cell Biology
- Molecular Biology
Background:
- Poxviruses are large DNA viruses replicating in the cytoplasm.
- They rely on host translation machinery for protein synthesis.
- Poxviruses actively reprogram host translation regulation.
Purpose of the Study:
- To review how poxviruses manipulate host translation.
- To compare antiviral granules (AVGs) with stress granules (SGs).
- To discuss cytoplasmic sensing bodies during viral infections.
Main Methods:
- Review of recent findings on poxvirus-host translation interactions.
- Comparative analysis of AVGs and SGs.
- Examination of RNA- and DNA-sensing bodies.
Main Results:
- AVGs form around poxvirus factories and contain SG proteins.
- AVG formation is linked to abortive infections.
- Cytoplasmic complexes can contain sensing molecules.
Conclusions:
- AVGs share similarities with stress granules and viral sensing bodies.
- Understanding AVGs offers insights into viral infection mechanisms.
- Further research into AVGs and sensing bodies is warranted.
Related Concept Videos
Leaky Scanning
5.8K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.8K
Initiation of Translation
40.0K
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
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...
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...
40.0K
Initiation of Translation
8.4K
8.4K
Viruses with RNA Genomes
1.2K
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
1.2K
Subviral Agents
721
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
721
Inhibitors of Viral Protein Synthesis
1
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
1

