Millipore Sigma Vibrant Logo
Attention: We have moved. EMD Millipore products are no longer available for purchase on More

69149 Perfect Protein™ Markers, 15-150 kDa

View Products on
Purchase on Sigma-Aldrich


Replacement Information


Catalog NumberPackaging Qty/Pack
69149-3 Glass bottle 100 lane
69149-EA Glass bottle
OverviewThe Perfect Protein™ Markers are a novel set of recombinant proteins with defined sizes at convenient intervals. Designed for routine use in SDS-polyacrylamide gel electrophoresis, the Perfect Protein Markers enable highly accurate size determination of unknown samples. Unlike many conventional markers (e.g., ovalbumin, serum albumin, etc.), the Perfect Protein Markers contain no oligosaccharides that cause anomalous migration, heterogeneous "fuzzy" bands, or inaccurate size estimation. The markers are optimized for use with Coomassie blue staining, but adjusted amounts can also be used with other gel staining methods (e.g., silver staining, fluorescent dyes, etc.).

The Perfect Protein Markers, 15-150 kDa, include protein sizes of 15, 25, 35, 50, 75, 100, and 150 kDa. Each vial contains 400 µg protein. A 5-µl load contains 0.5 µg for each of the protein sizes, except for the 50-kDa band, which contains twice as much protein (1.0 µg).

The Perfect Protein Markers, 10-225 kDa, include the protein sizes listed above and two additional proteins, 10 kDa and 225 kDa, for applications requiring a broader size range. Each vial contains 500 µg protein. A 5-µl load contains 0.5 µg for each of the protein sizes, except for the 50-kDa band, which contains twice as much protein (1.0 µg).

The 4X SDS Sample Buffer (Cat. No. 70607), which is separately available, is a standard formulation commonly used for SDS-PAGE analysis of proteins. The solution includes DTT for complete denaturation of disulfide bonds. The buffer can be used at a final concentration of 2X for most applications.
Catalogue Number69149
Brand Family Novagen®
Product Information
Biological Information
Physicochemical Information
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Storage and Shipping Information
Ship Code Blue Ice Only
Toxicity Toxic
Storage -20°C
Avoid freeze/thaw Avoid freeze/thaw
Do not freeze Ok to freeze
Packaging Information
Transport Information
Supplemental Information
Global Trade Item Number
Catalog Number GTIN
69149-3 07790788052522
69149-EA 04053252043758


Perfect Protein™ Markers, 15-150 kDa Certificates of Analysis

TitleLot Number


Protein Purification and Detection Tools

Technical Info

Western Blotting Quick Reference Product Guide


  • Kenji Kojima, et al. (2008) Roles of functional and structural domains of hepatocyte growth factor activator inhibitor type 1 in the inhibition of matriptase. Journal of Biological Chemistry 283, 2478-2487.
  • Athmane Teghanemt, et al. (2008) Novel roles in human MD-2 of phenylalanines 121 and 126 and tyrosine 131 in activation of toll-like receptor 4 by endotoxin. Journal of Biological Chemistry 283, 1257-1266.
  • Jim F. White, et al. (2007) Dimerization of the class A G protein-coupled neurotensin receptor NTS1 alters G protein interaction. Procedings of the National Academy of Science 104, 12199-12204.
  • Dequan Chen, et al. (2005) Surface calreticulin mediates muramyl dipeptide-induced apoptosis in RK13 cells. Journal of Biological Chemistry 280, 22425-22436.
  • Larisa Tsavaler, et al. (2001) Trp-p8, a novel prostate-specific gene, Is up-regulated in prostate cancer and other malignancies and shares high homology with transient receptor potential calcium channel proteins. Cancer Research 61, 3760-3769.
  • Kelvin Nurse, et al. (1995) Purification, cloning, and properties of the tRNA ψ55 synthase from Escherichia coli. RNA 1,.