Virus Assembly
Virus Assembly - Related Videos
09:08
Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus
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2021
For in-depth mechanistic analysis of the respiratory syncytial virus (RSV) RNA synthesis, we report a protocol of utilizing the chaperone phosphoprotein (P) for coexpression of the RNA-free nucleoprotein (N0) for subsequent in vitro assembly of the virus-specific nucleocapsids (NCs).
09:47
Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly
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Cited by 6 •
2012
A simple, efficient and robust way to synchronize the delivery of multiple viral components to plant cells via Agrobacterium-mediated transient expression is described. This approach is amenable for studying replication, encapsidation followed by in vitro reassembly of non-viral components into genome depleted optical viral ghosts suitable for biomedical applications.
10:20
Assembly and Purification of Prototype Foamy Virus Intasomes
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Cited by 10 •
2018
Recombinant retroviral integrase and DNA oligomers mimicking viral DNA ends can form an enzymatically active complex known as an intasome. Intasomes may be used for biochemical, structural, and kinetic studies. This protocol details how to assemble and purify prototype foamy virus intasomes.
02:41
Protein Complex Assembly
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2020
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...
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
FAQs
Structural components coordinate through specific molecular interactions that bring viral proteins and the newly replicated genome into the same developing particle. These interactions determine how the capsid forms around the nucleic acid and, in enveloped viruses, how viral proteins associate with a host-derived lipid membrane. Their organization is therefore closely linked to whether the resulting particle becomes infectious.
Genome packaging connects the viral nucleic acid produced during infection with the structural shell that protects and carries it. If these components do not associate correctly, particle formation may not produce an infectious virus. Examining this step helps researchers identify molecular interactions that control infectivity and provides a basis for investigating assembly inhibitors.
Both particle types must coordinate viral genomes with structural proteins, but enveloped viruses add a membrane-acquisition step. Their particles obtain a lipid membrane from a host-cell membrane while incorporating viral proteins through budding. This distinction makes membrane association and budding important features to consider when studying how different viruses mature and spread.
The interactions that organize a particle also influence its progression toward a mature, infectious form. Because assembly determines how viral proteins and genomes are arranged, it can affect how newly formed particles spread and how viral structures are encountered by the immune system. Studying these relationships connects particle formation with both infection biology and immune response research.
A conceptual analysis begins after viral genome replication and protein production. Researchers follow how structural components recognize one another, how the nucleic acid becomes associated with a capsid, and, when relevant, how viral proteins and lipid membranes participate in budding. This sequence links molecular interactions to the formation, maturation, and potential infectivity of the resulting particles.
Understanding assembly supports several research directions, including the development of inhibitors that interfere with particle formation. It also informs vaccine research and the design of engineered viral vectors for research or therapeutic use. In each case, knowledge of genome packaging, structural interactions, and membrane acquisition helps guide efforts to alter or exploit viral particle production.
Assembly is relevant because it connects intracellular viral production with the generation of particles capable of spreading infection. The organization and maturation of those particles also shape how viral components interact with the host immune system. Consequently, assembly studies provide a bridge between molecular virology, infection progression, immune responses, and strategies intended to limit or redirect viral activity.