Viral Protein Rna Complex
Viral Protein Rna Complex - Related Videos
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...
10:53
Isolation of Cognate RNA-protein Complexes from Cells Using Oligonucleotide-directed Elution
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Cited by 3 •
2017
This manuscript describes an approach to isolate select cognate RNPs formed in eukaryotic cells via a specific oligonucleotide-directed enrichment. We demonstrate the applicability of this approach by isolating a cognate RNP bound to the retroviral 5' untranslated region that is composed of DHX9/RNA helicase A.
06:36
Horizontal Gel Electrophoresis for Enhanced Detection of Protein-RNA Complexes
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Cited by 6 •
2017
Native polyacrylamide gel electrophoresis is a fundamental tool for analyzing RNA-protein interactions. Traditionally most experiments have used vertical gels. However, horizontal gels provide several advantages, such as the opportunity to monitor complexes during electrophoresis. We provide a detailed protocol for generating and using horizontal native gel electrophoresis.
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.
09:26
Identification of Footprints of RNA:Protein Complexes via RNA Immunoprecipitation in Tandem Followed by Sequencing (RIPiT-Seq)
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Cited by 3 •
2019
Here, we present a protocol to enrich endogenous RNA binding sites or "footprints" of RNA:protein (RNP) complexes from mammalian cells. This approach involves two immunoprecipitations of RNP subunits and is therefore dubbed RNA immunoprecipitation in tandem (RIPiT).
FAQs
Recognition depends on both the RNA sequence and its three-dimensional structure. Viral proteins can identify particular nucleotide patterns, structural features, or combinations of both, while positively charged protein regions interact electrostatically with the negatively charged RNA backbone. This combination gives binding enough selectivity to organize viral RNA rather than relying only on general charge attraction.
Electrostatic attraction helps bring viral proteins and RNA together, but binding can also reshape the RNA into a functional structure. The resulting fold may expose or position regions needed for replication, translation, trafficking, or packaging. Thus, the interaction is not merely adhesive; it can change RNA organization in ways that influence which viral processes occur.
After a viral protein binds RNA, the complex can provide an organized platform for recruiting other viral proteins or host factors. These added components may help direct the RNA toward replication, translation, intracellular trafficking, or packaging. Which factors associate can therefore influence how the viral genome is used and transported within an infected cell.
Composition identifies which viral and host components participate, whereas architecture describes how those components are arranged around the RNA. Examining both features can connect molecular organization with functions such as genome replication or virion assembly. This information helps researchers distinguish essential interactions from supporting ones and identify structural features that may be experimentally targeted.
Mapping the interactions that stabilize or organize these complexes can highlight molecular points required for viral RNA use. An antiviral strategy could then focus on disrupting a protein-binding event, altering RNA recognition, or preventing recruitment of another necessary factor. The value of this approach comes from targeting a process tied directly to the viral life cycle.
Their molecular composition and organization provide information about how viral RNA is handled during infection. That knowledge can contribute to vaccine design by clarifying viral components involved in genome use or particle formation, and it can support molecular diagnostics by identifying informative protein–RNA features. These applications extend structural biology into prevention and detection of viral infection.