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Protein Molecular Weight Markers

Individual or ladder series of specific mass (kilodalton, kDa) markers for use as approximate sizing standards in protein gel electrophoresis (especially SDS-PAGE); available preformulated in loading buffer, prestained, and unstained.
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Fisher BioReagents™ EZ-Run™ Prestained Rec Protein Ladder, Fisher BioReagents

Comprised of 10 recombinant proteins covalently coupled to a blue chromophore plus 10 and 72kDa reference bands tagged with green and orange dyes, respectively

Product Type Protein Molecular Weight Marker
Form Liquid
Formulation Supplied in gel-loading buffer
Color Blue
Storage Requirements −20°C
Range 10-170 kDa
For Use With (Application) Monitoring protein separation during SDS-PAGE
2

Invitrogen™ E-PAGE™ SeeBlue™ Pre-stained Standard  DFS Item

Designed for use with pre-cast E-PAGE™ Electrophoresis System

4

MilliporeSigma™ Novagen™ Perfect Protein™ HRP Western Blot Kit

Detect markers by adding S-protein or His·Tag™ Monoclonal Antibody.

5

Invitrogen™ NuPAGE™ Large Protein Staining Kit  DFS Item

Specifically designed for large protein analysis on NuPAGE Novex Tris-Acetate Gels under denaturing conditions

6

Thermo Scientific™ PageRuler™ Prestained NIR Protein Ladder

A mixture of 10 proteins (11 to 250KDa) that are blue-stained and fluor-labeled for near-IR fluorescent visualization and protein sizing following electrophoresis.

Number of Markers 10
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 130, 95, 70, 55, 43, 34, 26, 15, 11 kDa
Ready to Load Yes
Color Blue
Size Range 11 to 250 kDa
Product Line PageRuler
Detection Method Colorimetric, NIR Fluorescence (700 nm)
7

Invitrogen™ IEF Marker 3-10  DFS Item

Ready-to-use protein marker especially developed for IEF applications

8

Thermo Scientific™ SuperSignal™ Molecular Weight Protein Ladder

Ready-to-use mix of recombinant proteins (20 to 150K) with IgG-binding sites for chemiluminescent, fluorescent, chromogenic or other detection methods.

9

Thermo Scientific™ PageRuler™ Unstained Broad Range Protein Ladder

A mixture of 11 proteins (5 to 250kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

Number of Markers 11
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 150, 100, 70, 50, 40, 30, 20, 15, 10, 5 kDa
Ready to Load Yes
Stain Type Unstained
Size Range 5 to 250 kDa
Product Line PageRuler
10

Invitrogen™ iBright™ Prestained Protein Ladder  DFS Item

For visualization and protein sizing during Electrophoresis and confirmation of Western blot detection.

Shipping Condition Dry Ice
Content And Storage Storage buffer: 62.5 mM Tris-H3PO4 (pH 7.5 at 25°C), 1 mM EDTA, 2% (w/v) SDS, 10 mM DTT, 1 mM NaN3 and 33% glycerol

Upon receipt, store at –20°C. Product is shipped on ice.
Number of Markers 12
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 130, 95, 80, 70, 55, 43, 34, 30, 26, 15, 11 kDa
Ready to Load Yes
Color Blue
Size Range 11 to 250 kDa
Gel Compatibility Novex™ Midi Gels, Novex™ Mini Gels, Novex™Tris-Glycine Gels, NuPAGE™ Bis-Tris Gels, NuPAGE™ Gels, NuPAGE™ MES Gels, NuPAGE™ MOPS Gels, NuPAGE™ Tris-Acetate Gels, Precise™ Tris-Glycine Gels, SDS-PAGE Gels, Precise™ Tris-HEPES Gels
Product Line iBright
11

Invitrogen™ NuPAGE™ Large Protein Sensitive Staining Kit  DFS Item

Specifically designed for large protein analysis on NuPAGE Novex Tris-Acetate Gels under denaturing conditions

12

Invitrogen™ Novex™ Sharp Unstained Protein Standard  DFS Item

Designed for accurate, easy and convenient molecular weight estimation of a wide range of molecular weight proteins during SDS-PAGE and western blotting

13

Invitrogen™ BenchMark™ Fluorescent Protein Standard  DFS Item

Consists of fluorescent dye-conjugated proteins, ranging in size from approx. 11-155kDa

14

MilliporeSigma™ Novagen™ Perfect Protein™ Markers, 10-225 kd

Designed for routine use in SDS-polyacrylamide gel electrophoresis, the Perfect Protein Markers enable highly accurate size determination of unknown samples.

15

Invitrogen™ BenchMark™ His-tagged Protein Standard  DFS Item

Used as a positive control and for molecular weight sizing in his-tagged fusion protein detection