Viral Assembly
Viral Assembly - Related Videos
02:17
Visualizing Viral Structural Protein Assembly on Giant Unilamellar Vesicle Membranes
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2026
Source: Olety, B., et. al., Visualization of HIV-1 Gag Binding to Giant Unilamellar Vesicle (GUV) Membranes. J. Vis. Exp. (2016)This study demonstrates a fluorescence-based assay to observe the membrane-binding behavior of human immunodeficiency virus type-1 structural protein. Using synthetic giant unilamellar vesicles as model membranes, the assay visualizes protein recruitment and assembly, mimicking early steps of viral particle formation.
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.
00:57
Viral Recombination
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2019
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment. Viral Recombination Can Create New Diseases Some diseases can infect multiple species. For example, pigs can be infected by some human and...
00:56
Viral Structure
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2019
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. Structural Classes of Viruses Many criteria are used to classify viruses, including capsid design. Most viruses...
05:04
Viral Antigen Microarray Assay to Detect Antibody Isotypes in Serum Against Viral Antigen
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2025
In this video, we demonstrate the process for detecting antibody isotypes in multiple human serum samples using a microarray slide printed with antigenic subtypes of influenza virus strains.
FAQs
A procapsid can serve as an intermediate structure before a mature protective shell is completed. In scaffold-guided pathways, scaffold components help organize capsid proteins during construction, supporting the precise interactions needed for particle formation. These intermediates show that assembly is not always a single event, but may proceed through ordered structural stages.
Genome packaging occurs after or during capsid organization, depending on the viral pathway. Newly produced genomes must encounter structural components through coordinated molecular interactions so that the resulting particle contains both the genetic material and its protective shell. This coordination is important because assembly produces infectious particles only when the necessary components are organized together.
Spatial organization brings viral genomes, capsid proteins, and relevant host-cell membranes into the locations where they can interact productively. The process therefore depends not only on which components are present, but also on their positioning within the cell. Disrupted organization can affect particle formation and, consequently, the production of infectious virus.
Enveloped viruses add a lipid membrane after or during particle formation by budding from a host-cell membrane. That membrane also contains viral proteins, so assembly must coordinate capsid and genome organization with membrane acquisition. This creates an additional structural step compared with pathways centered on forming a protective capsid without the membrane-budding stage described for enveloped viruses.
Host-cell conditions can influence how efficiently viral components meet and how accurately they organize into particles. The relevant variables include the availability and spatial distribution of newly produced genomes, structural proteins, and, for enveloped viruses, suitable host membranes containing viral proteins. Because pathways vary widely, the same general stages can depend on virus-specific cellular settings.
Researchers examine assembly to connect molecular organization with the formation of infectious particles and successful viral propagation. This knowledge supports antiviral drug development by identifying assembly-dependent processes, informs viral-vector design for gene delivery, and helps clarify how viral structure affects infectivity. The topic therefore links basic studies of viral architecture with practical biomedical applications.