Related Experiment Video
Updated: Aug 10, 2025
14:40
Exploring m6A and m5C Epitranscriptomes upon Viral Infection: an Example with HIV
Published on: March 5, 2022
3.3K
Interplay of RNA 2'-O-methylations with viral replication
Alice Decombe1, Priscila El Kazzi1, Etienne Decroly1
1AFMB, CNRS, Aix-Marseille University, UMR 7257, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France.
Current Opinion in Virology
|February 10, 2023
Summary
Viral RNA (vRNA) 2''-O-methylation is a key epitranscriptomic modification. This study explores the mechanisms and roles of vRNA 2''-O-methylation in viral replication.
Area of Science:
- Molecular Biology
- Virology
- Epitranscriptomics
Background:
- Post-transcriptional modifications, including methylation, regulate RNA functions.
- 2'-O-methylation, a modification of the ribose moiety, is found on viral RNAs (vRNAs).
- The biological consequences of vRNA 2'-O-methylation are not fully understood, with reported proviral and antiviral roles.
Purpose of the Study:
- To investigate the mechanisms controlling 2'-O-methylation in viral RNA.
- To explore the functional significance of vRNA 2'-O-methylation in viral replication.
Main Methods:
- Focus on the mechanisms governing vRNA 2'-O-methylation.
- Exploration of the roles of this epitranscriptomic modification.
Main Results:
- (Results not detailed in the abstract, but the study focuses on mechanisms and roles.)
- (Further research is needed to elucidate specific outcomes.)
Conclusions:
- 2'-O-methylation is an important epitranscriptomic mark on viral RNA.
- Understanding the mechanisms and roles of vRNA 2'-O-methylation is crucial for viral replication studies.
Related Concept Videos
01:29Viruses with RNA Genomes
73
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...
73
01:23RNA Interference
26.2K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
26.2K
00:36Viral Mutations
32.7K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
32.7K
01:26Size and Structure of Viral Genomes
86
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
86
01:20Types of RNA
6.0K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
6.0K
01:10Retrovirus Life Cycles
46.4K
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
46.4K