Virus Bacteria Binding
Virus Bacteria Binding - Related Videos
04:24
An Assay to Quantify the Binding of Human Norovirus VLPs to Intestinal Bacteria
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2025
This video demonstrates an assay for quantifying human norovirus virus-like particles (VLPs) binding to human intestinal bacteria. The bacterial suspensions are mixed with the VLPs and incubated to allow the formation of VLP-bacteria complexes. The complexes are then labeled with fluorophore-tagged VLP-specific antibodies, followed by flow cytometry-based visualization and quantification to identify the percentage of VLP-bound bacteria.
07:02
Quantifying Human Norovirus Virus-like Particles Binding to Commensal Bacteria Using Flow Cytometry
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Cited by 8 •
2020
The goal of this protocol is to quantify binding of the eukaryotic pathogen human norovirus to bacteria. After performing an initial virus-bacterium attachment assay, flow cytometry is used to detect virally-bound bacteria within the population.
12:33
Determination of Biofilm Initiation on Virus-infected Cells by Bacteria and Fungi
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Cited by 3 •
2016
A method is described herein for the determination of inter-Kingdom association and competition (bacterial and fungal) for adherence to virus-infected HeLa cell monolayers. This protocol can be extended to multiple combinations of prokaryotes, eukaryotes, and viruses.
01:10
Intracellular Movement of Viruses and Bacteria
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2023
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a virus that...
07:02
An Assay for Quantifying Protein-RNA Binding in Bacteria
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Cited by 3 •
2019
In this method, we quantify the binding affinity of RNA binding proteins (RBPs) to cognate and non-cognate binding sites using a simple, live, reporter assay in bacterial cells. The assay is based on repression of a reporter gene.
FAQs
Receptor recognition depends on a structural match between viral attachment proteins and bacterial surface features. Capsid or tail proteins may interact with polysaccharides, proteins, or pili, so bacteria lacking the appropriate receptor may remain unsusceptible. This molecular compatibility helps explain host specificity and establishes why closely related bacterial cells can differ in phage susceptibility.
Initial contacts can be reversible, allowing the virus to sample the bacterial surface before committing to stable adsorption. Once attachment becomes sufficiently stable, the interaction can support genome injection into the cell. Distinguishing these stages helps researchers analyze where infection is controlled and how binding influences the efficiency and outcome of viral entry.
Capsid or tail proteins provide the viral structures that recognize complementary receptors on bacterial cells. Their interactions with surface polysaccharides, proteins, or pili determine whether attachment can progress beyond an initial contact. Examining these components connects viral architecture with bacterial susceptibility, host range, and the molecular events that precede genome injection.
A useful analysis considers the viral attachment structure, the bacterial receptor, and whether contacts remain reversible or become stable adsorption. Researchers can then relate the observed interaction to bacterial susceptibility and potential genome injection. This framework organizes experiments around molecular recognition and the infection step most directly responsible for determining host range.
Binding research can identify how a phage recognizes susceptible bacteria and whether that interaction supports infection. This information is relevant to phage therapy because treatment depends on targeted viral activity against bacterial cells. Understanding receptor compatibility also provides a basis for developing engineered viruses intended for more selective antimicrobial treatment.
Because binding depends on complementary bacterial surface receptors, it can help distinguish cells that are susceptible to particular viruses from those that are not. That specificity supports bacterial detection and investigation of microbial communities. In microbiome research, studying these interactions can clarify how phage recognition relates to the composition and behavior of bacterial populations.