Gel Slice Isolation
Gel Slice Isolation - Related Videos
03:44
Isolation and Visualization of Rotavirus Genome via Gel Electrophoresis
0 Views •
2026
Source: Philip, A. A., et al., Simplified Reverse Genetics Method to Recover Recombinant Rotaviruses Expressing Reporter Proteins. J. Vis. Exp. (2020)This video demonstrates the isolation of rotavirus double-stranded RNA from clarified cell lysates. It further illustrates the separation and visualization of genome segments through polyacrylamide gel electrophoresis.
06:30
Gel Purification
0 Views •
2023
Gel purification is used to recover DNA fragments after electrophoretic separation. DNA recovery from an agarose gel includes three basic steps: binding, washing and eluting from a silica column. DNA is believed to bind to silica in the presence of high salt via a salt bridge. Following binding, DNA is washed of impurities and eluted under low salt conditions disrupting this interaction. This video goes through a step-by-step, generalized procedure for cutting out a band from the gel, gel...
09:22
DNA Gel Electrophoresis
0 Views •
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...
10:03
Isolation of CA1 Nuclear Enriched Fractions from Hippocampal Slices to Study Activity-dependent Nuclear Import of Synapto-nuclear Messenger Proteins
0 Views •
Cited by 8 •
2014
We provide a detailed protocol for induction of long-term potentiation in the CA1 region of the hippocampus and the subsequent isolation of nuclear enriched fractions from the tetanized area of the slice. This approach can be used to determine activity dependent nuclear protein import in cellular models of learning and memory.
10:55
Staining Proteins in Gels
0 Views •
Cited by 7 •
2008
Following separation by electrophoretic methods, proteins in a gel can be detected by several staining methods. Staining of proteins with Coomassie Blue, Silver Staining, SYPRO Orange, SYPRO Ruby are demonstrated in this video.
FAQs
Electrophoresis separates DNA or RNA bands according to size, allowing the desired fragment to be distinguished from other nucleic acid molecules in the gel. Selection therefore depends on matching the visible band with the intended size and experimental target. Accurate identification at this stage determines whether the recovered material is suitable for subsequent molecular biology analysis.
Suitable illumination helps make the target band visible for accurate excision while limiting exposure that could damage the nucleic acid. This balance matters because the sample must remain intact after visualization and cutting. Minimizing unnecessary illumination supports better recovery quality, particularly when the isolated material will undergo amplification, cloning, sequencing, or another sensitive downstream procedure.
The gel matrix holds separated DNA or RNA bands in place during electrophoresis but must be processed afterward so the nucleic acid can be released. Efficient processing improves recovery of the selected material from the excised slice. The quality of this release influences whether enough usable nucleic acid remains for restriction analysis, amplification, sequencing, or cloning.
A practical sequence is to identify the intended band after electrophoresis, locate it under suitable illumination, excise it with a clean blade, and process the gel slice to release the nucleic acid. Keeping these actions focused on the selected band reduces unnecessary handling and helps preserve material for further analysis.
Using a clean blade during excision helps limit contamination introduced from the cutting instrument into the gel slice and recovered sample. This is important because the isolated DNA or RNA may be used in procedures where unwanted material could interfere with interpretation or downstream reactions. Clean handling therefore supports the reliability of the recovered nucleic acid.
Researchers apply the approach when a particular DNA or RNA band separated by electrophoresis must be recovered for another experiment. The isolated material can support cloning, sequencing, amplification, restriction analysis, or other downstream molecular biology methods. Its value lies in connecting size-based separation with focused analysis of a selected nucleic acid fragment.