Viral Capsid Proteins
Viral Capsid Proteins - Related Videos
03:24
Visualizing Heat-Treated Viral Capsids Using Transmission Electron Microscopy
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2026
Source: Moore, M. D., et al. Alternative In Vitro Methods for the Determination of Viral Capsid Structural Integrity. J. Vis. Exp.(2017).This video demonstrates how purified viral capsids are heat-treated, prepared, and imaged using transmission electron microscopy (TEM) to reveal structural changes and heat-induced damage.
12:57
Alternative In Vitro Methods for the Determination of Viral Capsid Structural Integrity
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Cited by 6 •
2017
Routine detection methods utilizing viral genome amplification are limited by their inability to discriminate infectious from non-infectious particles. The purpose of this article is to provide detailed protocols for alternative methods to aid in discrimination of infectious norovirus particles using aptamer binding, dynamic light scattering, and transmission electron microscopy.
02:36
Multiplexed Fluorescence Imaging of Viral Nucleic Acids and Protein in Infected Human Lymphocytes
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2026
Source: Shah, R., et al. Single-Cell Multiplexed Fluorescence Imaging to Visualize Viral Nucleic Acids and Proteins and Monitor HIV, HTLV, HBV, HCV, Zika Virus, and Influenza Infection. J. Vis. Exp. (2020)This video demonstrates simultaneous visualization of HIV-1 DNA, RNA, and capsid protein in infected human lymphocytes using branched DNA hybridization and immunofluorescence, enabling detailed analysis of viral replication stages within individual cells.
07:24
In Vitro Disassembly of Influenza A Virus Capsids by Gradient Centrifugation
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Cited by 4 •
2016
Disassembly of influenza A virus cores during virus entry into host cells is a multistep process. We describe an in vitro method to analyze the early stages of viral uncoating. In this approach, velocity gradient centrifugation is used to biochemically dissect the steps that initiate uncoating under defined conditions.
05:13
Isolation of Proteins from Viral DNA-protein Complexes
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2026
Source: Dembowski, J. A., et al. Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins. J. Vis. Exp. (2017).This video demonstrates the isolation of protein–viral DNA complexes from cell nuclei using click chemistry and magnetic bead purification. The protocol involves labeling viral genomes with alkyne-modified nucleotides, biotinylation via a click reaction, and binding to streptavidin-coated magnetic beads. Following washing and heat elution, the purified...
FAQs
Specific contacts among capsid subunits determine how those proteins fit together and produce a symmetrical architecture. That organization allows the shell to package the viral genome while maintaining a coherent protective structure. Because assembly depends on the compatibility of neighboring proteins, studying these interactions helps explain how capsid architecture supports particle stability and genome protection.
Surface features on capsid proteins create the parts of a viral particle that participate in receptor binding, cell entry, and immune recognition. Their position and molecular presentation therefore connect capsid architecture with the first stages of host-cell interaction and with how the immune system detects the particle. Examining these features helps relate structure to viral behavior.
Assembly is not only a packaging event; its structural organization also provides a way to investigate viral replication and transmission. When researchers examine how capsid proteins form particles and protect the genome, they can connect particle architecture with stages of the viral life cycle and with properties relevant to spread. This makes capsid assembly a useful focus in biology.
Studying capsid structure and assembly identifies molecular features central to particle stability, genome protection, host-cell interaction, and immune recognition. Those findings can inform antiviral drug design by highlighting capsid-related processes and can support vaccine development by focusing attention on viral particle features encountered by the immune system. The value lies in linking structure with protective or therapeutic strategies.
Engineered virus-like particles extend capsid research beyond describing natural viruses. Their designed protein shells can serve as platforms in biotechnology, where particle architecture supports exploration of targeted delivery and related applications. They also connect virology with nanomaterials research, allowing capsid-based structures to be considered as organized materials rather than only as components of infectious viral particles.
Capsid proteins provide a biological architecture that can be studied for uses beyond the viral life cycle. Through engineered virus-like particles, researchers can investigate how organized shells support targeted delivery and can adapt capsid-based structures for nanomaterials research. These applications build on the same structural properties that enable genome packaging, particle stability, and interactions with biological systems.