Bis-tris Gels
Bis-tris Gels - Related Videos
22:45
Western Blotting Using the Invitrogen NuPage Novex Bis Tris MiniGels
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Cited by 28 •
2007
This technical article describes a standard western-blotting procedure using the commercially available NuPAGE electrophoresis Mini-Gel system from Invitrogen.
11:42
Solid Phase Synthesis of a Functionalized Bis-Peptide Using "Safety Catch" Methodology
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Cited by 2 •
2012
The efficient solid-phase peptide synthesis of a functionalized bis-peptide trimer utilizing a "safety catch" cleavage procedure from HMBA resin is described.
08:01
Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
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2016
A protocol for in situ aqueous synthesis of a bis(iminoguanidinium) ligand and its utilization in selective separation of sulfate is presented.
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...
09:00
An In Vitro Enzymatic Assay to Measure Transcription Inhibition by Gallium(III) and H3 5,10,15-tris(pentafluorophenyl)corroles
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Cited by 1 •
2015
Gallium(III) 5,10,15-(tris)pentafluorophenylcorrole and its freebase analogue exhibit low micromolar cell cytotoxicity. This manuscript describes an RNA transcription reaction, imaging RNA with an ethidium bromide-stained gel, and quantifying RNA with UV-Vis spectroscopy, in order to assess transcription inhibition by corroles and demonstrates a straightforward method of evaluating anticancer candidate properties.
FAQs
The discontinuous Bis-Tris buffer system supports efficient stacking before proteins enter the separating region of the gel. Stacking concentrates proteins into more defined starting zones, which helps distinguish bands during size-based migration. This sharper organization is useful when researchers need to compare several proteins in the same sample or resolve closely spaced signals.
A near-neutral environment can improve compatibility with proteins during electrophoresis and help limit unwanted protein modification. That stability is important when the separated material will be examined for expression patterns, molecular mass, or sample purity. It also makes the system useful when researchers want consistent separation conditions across protein analyses.
The polyacrylamide network acts as a molecular sieve, so proteins of different sizes migrate through it at different rates in the electric field. Their positions after electrophoresis provide a pattern that researchers can use to estimate molecular mass and distinguish components within a mixture. The resulting band separation also supports assessment of sample complexity.
Reduced protein modification helps preserve the characteristics of proteins while they pass through the gel system. This can make the resulting separation more representative of the original sample and support clearer interpretation of protein bands. The benefit is especially relevant when comparing protein expression or evaluating material that will be examined in downstream Western blotting.
A typical analysis places the protein sample into the gel, applies an electric field, and allows the proteins to migrate through the polyacrylamide matrix. After separation, the band pattern can be examined to estimate molecular mass, compare expression, or assess purity. The same separated proteins may also provide material for Western blotting analysis.
They are useful when a researcher needs to compare the presence or relative pattern of proteins among samples or determine whether a preparation contains multiple components. Size-resolved bands reveal differences in the protein profile, while a simpler pattern can support an assessment of purity. These uses place the gels within routine molecular biology and biochemistry workflows.
Bis-tris gels provide a separated protein pattern that can be evaluated directly or used as part of a Western blotting workflow. Their consistent performance helps researchers examine protein expression and estimate molecular mass before interpreting specific signals. In biology, this connects gel electrophoresis with broader studies of protein composition, preparation quality, and experimental outcomes.