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Molecular-weight size markers are a set of standards used to identify the approximate size of a molecule run on a gel during electrophoresis, using the principle that molecular weight is inversely proportional to migration rate through a gel matrix. The molecular weight markers offered are ideal for verification of PCR products, for size analysis of digested DNA, and easy band identification of a number of different fragments. Certain models are available pre-mixed with loading dye.
DNA markers
Supplier: LONZA
DNA marker is for rapid size estimation of PCR products and restriction fragments. DNA can be visualised by ethidium bromide staining or kinased with radiolabelled ³²P for detection by autoradiography.
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Marqueurs Perfect DNA™
Supplier: Merck Millipore (Novagen)
Molecular size markers for routine use in plasmid cloning, the Perfect DNA™ markers contain sets of DNA species having convenient, easy-to-remember sizes for agarose gel analysis. The markers have uniform band intensities except for the indicated reference bands, which are useful for instant band identification.
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DNA ladder, 1 kb Plus, DNAmark™
Supplier: G-Biosciences
DNAmark™ 1 kb Plus ladder contains 15 DNA bands ranging from 100 bp to 10 kb. The 500 bp and 3000 bp fragment are present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5 µl loading, all fragments except 500 bp and 3000 bp are 40 ng. The 500 bp and 3000 bp fragment are 100 ng.
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Echelles Perfect DNA™
Supplier: Merck Millipore (Novagen)
Les échelles Perfect DNA™ contiennent des jeux d'espèces d'DNA de taille pratique et aisément mémorisable pour l'analyse de gel d'agarose. Les marqueurs ont des intensités de bande uniformes et couvrent une large gamme de tailles d'DNA.
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DNA ladder, 100 bp
Supplier: PanReac AppliChem
This DNA ladder is ideal for determining the size of double-stranded DNA ranging from 100 to 1,000 base pairs. The ladder consists of ten fragments that range in size from 100 to 1,000 bp in 100 bp increments. The 500 bp fragment is present at increased intensity to allow easy identification. All fragments are blunt-ended.
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DNA QuantLadders
Supplier: LONZA
QuantLadders are prepared from five highly purified DNA fragments that provide visual quantitation of DNA within ±1% accuracy. The DNA QuantLadder provides each DNA fragment in perfect relative mass equivalence at 100 ng, 70 ng, 50 ng, 20 ng and 10 ng. The reverse QuantLadder simply reverses the mass equivalence order of the QuantLadder.
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Prestained protein markers, Peacock™
Supplier: Biotium
A visible three-colour protein marker for SDS-PAGE or western blotting, with 10 bands ranging from 10 to 180 kDa.
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Protein markers, ProSieve™ Colour
Supplier: LONZA
ProSieve™ Color protein marker have been labelled with three different fluorescent dyes. These markers are supplied as a lyophilised solid containing the buffer salts and detergent found in the typical Laemmli buffer system. It contains nine proteins with approximate masses of 10, 15, 20, 25, 40, 50, 80, 125, and 190 kDa.
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Western blotting markers, Perfect Protein™, Novagen®
Supplier: Merck Millipore (Novagen)
The Perfect Protein™ Western Markers consist of seven recombinant S•Tag™/His•Tag® fusion proteins that can be detected on any Western blot using an S-protein AP or HRP conjugate. As an additional option, the markers can also be detected with an His•Tag Monoclonal Antibody and an AP or HRP conjugated secondary antibody. The Perfect Protein Western Markers serve as precise size standards that appear simultaneously on the blot with target proteins, eliminating the uncertainty and imprecision associated with other methods.
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DNA molecular weight marker, wide range
Supplier: Thermo Fisher Scientific
This wide range molecular weight marker contains 60 ng/μl of 21 fragments from 100 bp to 12000 bp. The bands appear in 100 bp increments from 100 to 1000 bp and in 1000 bp increments from 1 to 12 kb. Bands at 1 kb and 5 kb stain brighter to aid identification.
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Prestained protein markers, Peacock™ Plus
Supplier: Biotium
A visible three- colour protein marker for SDS-PAGE or western blotting, with 12 bands ranging from 8 to 245 kDa.
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DNA ladder, 100 bp Plus, DNAmark™
Supplier: G-Biosciences
DNAmark™ 100 bp Plus ladder consists of 14 DNA fragments ranging in size from 100 to 3000 base pairs (bp). The 500 bp and 1200 bp fragment are present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5 µl loading, all fragments except 500 bp and 1200 bp are 40 ng. The 500 bp and 1200 bp fragment are 100 ng.
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DNA ladder, 100 bp, DNAmark™
Supplier: G-Biosciences
DNAmark™ 100 bp ladder consists of 11 fragments ranging from 100 to 1500 base pairs (bp). The 500 bp fragment is present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5 µl loading, all fragments except 500 bp are 40 ng. The 500 bp fragment is 100 ng.
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DNA ladder, 500 bp, DNAmark™
Supplier: G-Biosciences
DNAmark™ 500 bp ladder consists of 10 DNA fragments ranging from 500 bp to 5000 bp. The 2000 bp fragment is present at increased intensity to allow easy identification. All fragments are precisely quantified and mixed during the production. For 5 µl loading, all fragments except 2000 bp are 40 ng. The 2000 bp fragment is 100 ng.
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Marqueurs de protéines par électrophorèse sur gel
Supplier: PanReac AppliChem
Les principales utilisations des marqueurs de protéines précolorés sont le suivi de la migration des protéines pendant SDS-PAGE, la vérification de l'efficacité de transfert Western vers les membranes, l'estimation des tailles des protéines sur les gels de polyacrylamide SDS et les transferts Western.
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DNA ladder
Supplier: LONZA
Thse DNA ladders provides rapid and easy size determination of the DNA samples. Each band has an ideal 50 % G-C content for precise sizing and sharp resolution. It is free from contaminating plasmid DNA with minimal background.
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pI markers
Supplier: Cytiva
pI markers are lyophilized mixtures of stable, salt-free, highly purified proteins.
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Protein standards
Supplier: Genscript
GenScript offers a wide selection of Protein molecular weight standards for SDS-PAGE and Western blot, including prestained, unstained, peptide, Western-viewable, and other standards.
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Échelle d'ADN 1 kb
Supplier: STEMCELL Technologies
Échelle d'ADN composée de 13 fragments de 250 à 10000 paires de bases permettant de déterminer la taille de l'ADN double brin par électrophorèse sur gel.