Related Experiment Video
Updated: Jul 16, 2026

09:58
An Optimized Protocol for Electrophoretic Mobility Shift Assay Using Infrared Fluorescent Dye-labeled Oligonucleotides
Published on: November 29, 2016
RNA electrophoretic mobility shift assay using a fluorescent DNA sequencer.
1Research Laboratory, Faculty of Medicine, University of Ryukyus, Okinawa, Japan.
Methods in Molecular Biology (Clifton, N.J.)
|March 3, 2007
Summary
We developed a faster, safer method to detect mRNA-binding proteins using fluorescence-labeled RNA. This technique offers higher resolution than traditional gel-based assays for studying RNA-protein interactions.
Area of Science:
- Molecular Biology
- Biochemistry
- Biophysics
Background:
- Studying RNA-protein interactions is crucial for understanding gene regulation.
- Conventional methods like slab gel electrophoresis can be time-consuming and less sensitive.
Purpose of the Study:
- To develop a rapid, high-resolution method for detecting mRNA-binding proteins.
- To improve upon existing RNA electrophoretic mobility shift assays.
Main Methods:
- Utilized in vitro transcription to synthesize Texas Red-labeled synthetic RNA.
- Employed fluorescence detection for enhanced visualization of RNA-protein complexes.
Main Results:
- The developed method provides higher resolution compared to conventional slab gel assays.
- The fluorescence-based detection offers rapid results and improved safety.
Conclusions:
- This novel fluorescence-labeled RNA method is a valuable tool for detecting mRNA-binding proteins.
- The technique offers significant advantages in speed, resolution, and safety for studying RNA-protein interactions.
More Related Videos
Related Concept Videos
Southern Blot
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Sanger Sequencing
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...

