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Novex™ Sharp Unstained Protein Standard (Invitrogen™)

Novex Sharp Unstained Protein Standard is designed for accurate and convenient molecular weight estimation of proteins during SDS-PAGE and western blotting. The standard consists of a wide range of molecular weight bands consisting of 12 proteins in the range of 3.5–260 kDa. The protein standard is supplied in a ready-to-use format for direct loading onto gels; no need to heat, reduce, or add sample buffer prior to use.

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Applications
• Accurate protein sizing on SDS-polyacrylamide gels and western blots

PageRuler™ Unstained Low Range Protein Ladder (Thermo Scientific™)

Thermo Scientific PageRuler Unstained Low Range Protein Ladder is a mixture of seven purified proteins and peptides (3.4 to 100 kDa) for use as size standards in peptide and small-protein gel electrophoresis. The protein ladder is supplied in a ready-to-use format for direct loading onto gels; no need to heat, reduce, or add sample buffer prior to use.

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Product features
• Reference bands—25 kDa band is stronger than the others for easy orientation
• Tagged—the ladder proteins (except for the 5 and 3.4 kDa peptides) contains an integral Strep-tag™ II sequence and can be detected on western blots using Strep-Tactin™ conjugates

Applications
• Accurate protein sizing on SDS-polyacrylamide gels and western blots

CandyCane™ Glycoprotein Molecular Weight Standards (Invitrogen™)

CandyCane glycoprotein molecular weight standards separate into alternating bands of glycosylated and nonglycosylated proteins during polyacrylamide gel electrophoresis.