Viral Protein Detection
Viral Protein Detection - Related Videos
01:28
Detection of Viral Proteins in Rabies Virus-Infected Mouse Brain Tissue
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2025
The virus infects pyramidal neurons in the cerebral cortex, and expressed viral proteins localize within intracytoplasmic granular structures known as inclusion bodies.
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...
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.
10:16
Detection of Viral RNA by Fluorescence in situ Hybridization (FISH)
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Cited by 35 •
2012
A fluorescence in situ hybridization (FISH) method was developed to visually detect viral genomic RNA using fluorescence microscopy. A probe is made with specificity to the viral RNA that can then be identified using a combination of hybridization and immunofluorescence techniques. This technique offers the advantage of identifying the localization of the viral RNA or DNA at steady-state, providing information on the control of intracellular virus trafficking events.
03:56
An In Vitro Recombinant Virus Reporter System for the Detection of Viral Infection
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2025
This video demonstrates an in vitro technique to detect hepatitis B virus (HBV) infection via a recombinant HBV reporter system. Upon infecting host cells, the recombinant viral genome expresses the luciferase reporter enzyme, which produces bioluminescence upon oxidizing its substrate — helping detect viral infection.
FAQs
Epitope recognition determines whether an antibody binds the intended viral protein rather than an unrelated component of the sample. In these assays, the antibody recognizes a specific region, or epitope, on the antigen. That selective interaction supports measurement of virus-derived proteins and helps distinguish samples when researchers study infection or viral replication.
Once an antibody binds its viral target, the interaction is translated into a measurable signal. Depending on the assay, that signal may appear as an enzyme-linked color change, fluorescence, or chemiluminescence. These readouts allow researchers to detect or compare viral protein levels in biological samples rather than relying only on visual evidence of infection.
ELISA, western blotting, and immunofluorescence provide complementary information. They can help characterize viral antigens and compare protein abundance, while immunofluorescence also shows where infection-associated proteins occur within cells or tissues. Selecting among them depends on whether the study emphasizes measurable protein levels, antigen characterization, or spatial localization.
Comparing viral protein abundance across biological samples helps researchers examine differences in viral replication and assess changes associated with experimental conditions. The measurements can also support evaluation of antiviral treatments by showing how protein detection changes between treated and untreated contexts. This makes abundance comparisons useful for connecting molecular findings with infection-related outcomes.
A general workflow starts with a biological sample and an antibody directed against a viral protein epitope. After the antibody binds its target, the assay uses an enzyme-linked, fluorescent, chemiluminescent, or related system to generate a signal. Researchers then use that measurable output to characterize antigens, compare abundance, or locate infection.
The approach is useful when researchers need direct evidence of infection, information about viral replication, or evidence of how infection relates to host responses. It supports diagnostic development, antiviral treatment evaluation, and studies of vaccine-induced immunity. By identifying viral antigens in samples, these assays connect molecular detection with broader infection and immune investigations.