Pre-cast Tgx Gel
Pre-cast Tgx Gel - Related Videos
06:30
Gel Purification
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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...
08:32
Indirect Fabrication of Lattice Metals with Thin Sections Using Centrifugal Casting
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Cited by 8 •
2016
An indirect additive manufacturing method combining a 3D printing of polymers with a centrifugal casting is outlined for manufacturing 3D octet truss metals (Al and Cu alloys) having a unit cell length of 5 mm with a wall thickness of 0.5 mm.
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...
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...
06:42
Cerebrovascular Casting of the Adult Mouse for 3D Imaging and Morphological Analysis
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Cited by 29 •
2011
In this article, we present a simple, practical technique for cerebrovascular casting that is easy to perform and can be utilized to image the vascular tree of the adult mouse brain.
FAQs
SDS denatures proteins and gives them a broadly similar negative charge-to-mass ratio. This reduces the influence of a protein’s original shape and electrical charge on its movement through the matrix. Under an electric field, migration therefore reflects size more closely, allowing separated bands to support protein comparison and molecular-weight estimation.
The polyacrylamide matrix contains pores that impede protein movement as molecules pass through the gel. Smaller proteins encounter less resistance and migrate more rapidly, whereas larger proteins move more slowly. This size-dependent separation creates distinct positions for proteins in a complex mixture, making differences in apparent molecular weight easier to examine.
The downstream goal determines the preferred readout. Staining reveals the overall protein pattern directly in the gel, supporting routine visualization and characterization. Transfer moves the separated proteins to a membrane for Western blotting, which is useful when the analysis requires examination of particular proteins rather than only the complete band pattern.
A pre-cast format provides a prepared polyacrylamide matrix, so researchers do not need to prepare the separating material before each run. This supports more consistent gel preparation and performance across routine experiments. Greater consistency helps researchers compare protein patterns between samples while reducing variation attributable to gel preparation.
A typical workflow places the protein samples in the prepared gel system, applies an electric field to separate the detergent-denatured proteins, and then examines the resulting pattern. Researchers can stain the gel for direct visualization or transfer the separated proteins to a membrane for Western blotting, depending on the intended analysis.
The format is useful when researchers need routine separation and comparison of proteins from complex mixtures. Supported uses include protein characterization, molecular-weight estimation, and studies of protein expression or purification. Its ready-to-use design is especially relevant when consistent preparation and performance matter across repeated biological technique workflows.
Band patterns provide information about the proteins present in a sample and their apparent molecular sizes. Comparing patterns can contribute to studies of protein expression and purification, while differences in migration or detected bands may support investigations of post-translational modification. Western blotting adds a membrane-based route for examining separated proteins after the run.