Rna Electrophoresis
Rna Electrophoresis - Related Videos
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.
09:22
DNA Gel Electrophoresis
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2023
DNA gel electrophoresis is a technique used for the detection and separation of DNA molecules. An electric field is applied to a gel matrix comprised of agarose, and within the gel, charge particles will migrate and separate based on size. The negatively charged phosphates of the DNA backbone cause DNA fragments to move toward the anode - a positively charged electrode. The video explains the mechanism by which DNA fragments are resolved on an agarose gel, and it provides a step-by-step...
05:34
Denaturing Urea Polyacrylamide Gel Electrophoresis for RNA Analysis: A Technique to Separate Fluorescently Labeled Phosphorylated RNA Oligonucleotides from their Non-Phosphorylated Equivalents
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2025
In this video, we demonstrate a denaturing polyacrylamide gel electrophoresis for the separation of phosphorylated RNA species from their non-phosphorylated counterparts. The RNA species are fluorescently labeled for laser detection on the gel.
08:50
Capillary Electrophoresis (CE)
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Capillary electrophoresis (CE) is a separation technique that separates molecules in an electric field according to size and charge. CE is performed in a small glass tube called a capillary that is filled with an electrolyte solution. Analytes are separated due to differences in electrophoretic mobility, which varies with charge, solvent viscosity, and size. Traditional electrophoresis in gels is limited in the amount of voltage...
07:31
Two-Dimensional Gel Electrophoresis
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2023
Two-dimensional gel electrophoresis (2DGE) is a technique that can resolve thousands of biomolecules from a mixture. This technique involves two distinct separation methods that have been coupled together: isoelectric focusing (IEF) and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). This physically separates compounds across two axes of a gel by their isoelectric points (an electrochemical property) and their molecular weights. The procedure in this video covers the main...
FAQs
Denaturing conditions disrupt secondary structures within RNA molecules, reducing the effect of folded shapes on migration. This allows differences in gel position to reflect RNA length more reliably rather than structural differences. As a result, researchers can interpret band patterns more confidently when evaluating transcript sizes or checking whether a sample contains unexpected RNA fragments.
RNA molecules move through the gel matrix at different rates because the matrix impedes larger molecules more strongly than smaller ones. Under an applied electric field, shorter RNA fragments travel farther and faster, while longer molecules remain closer to their starting position. This size-dependent separation produces a pattern that supports transcript-size assessment.
The band pattern can indicate whether RNA has degraded, whether unwanted contamination may be present, or whether transcripts differ from their expected sizes. These observations provide an early assessment of sample quality and composition. Detecting such problems before downstream analysis helps researchers recognize samples that may require closer evaluation or should not be used without qualification.
RNA integrity affects how confidently researchers can proceed to methods such as Northern blotting, reverse transcription, and RNA sequencing. Electrophoretic patterns provide quality-control information before those analyses begin. A sample showing degradation or unexpected features may produce results that are difficult to interpret, so early inspection helps place later findings in the correct experimental context.
A typical workflow places the RNA sample in a gel matrix, applies an electric field, and examines the resulting migration pattern. When denaturing conditions are used, the pattern can be interpreted primarily according to RNA length. Researchers then assess size, integrity, and possible contamination before deciding whether the sample is suitable for subsequent experiments.
Researchers can use RNA electrophoresis before Northern blotting, reverse transcription, or RNA sequencing to evaluate sample quality in advance. The method is particularly useful when confirming that RNA has not degraded or when checking for unexpected transcript sizes. This placement in the workflow supports better-informed decisions about downstream biological analyses.