Related Experiment Video
Updated: Jun 20, 2026
09:35
Purification and Visualization of Influenza A Viral Ribonucleoprotein Complexes
Published on: February 9, 2009
13.3K
Special Issue "Function and Structure of Viral Ribonucleoproteins Complexes".
1Architecture et Réactivité de l'ARN-CNRS UPR 9002, Université de Strasbourg, Institut de Biologie Moléculaire et Cellulaire, 67084 Strasbourg, France.
Viruses
|December 1, 2020
Summary
RNA viruses are rapid evolution machines that replicate efficiently by forming ribonucleic complexes (vRNPs) using viral and cellular components. These viral ribonucleic complexes are key to understanding viral replication and evolution.
Area of Science:
- Virology
- Molecular Biology
- Genetics
Background:
- RNA viruses exhibit remarkable evolutionary capabilities.
- Viral replication relies on the formation of viral ribonucleic complexes (vRNPs).
- vRNPs integrate viral and cellular components for efficient replication.
Discussion:
- The study explores the mechanisms by which RNA viruses evolve.
- The role of vRNPs in viral replication and evolution is investigated.
- Understanding vRNP formation is crucial for controlling viral infections.
Key Insights:
- RNA viruses are highly adaptable due to their rapid evolution.
- vRNPs are essential structures for viral replication.
- The interplay between viral and cellular factors shapes vRNP function.
Outlook:
- Further research into vRNP dynamics can reveal new antiviral targets.
- Investigating vRNP composition may lead to novel therapeutic strategies.
- This work provides a foundation for understanding RNA virus evolution.
Related Concept Videos
00:56Viral Structure
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
02:47Ribozymes
The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can be...
Ribozymes can be...
01:26Size and Structure of Viral Genomes
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...
01:29Viruses with RNA Genomes
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...
01:25Inhibitors Of Virion Release
Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...