Protein assays, most notably quantitation or estimation assays, for determining protein concentration are one of the most widely used methods in life science research. Protein estimation of protein concentration is necessary in protein purification, electrophoresis, cell biology, molecular biology, and other research applications. We offer a unique selection of protein estimation assays that are improvements on the Biuret, Lowry, BCA and Bradford assays. Each assay has its own benefits, however the NI™ (Non-Interfering™) Protein Assay and CB X™ Protein Assay overcome all interfering agents.
Although there are a wide variety of protein assays available, none of the assays can be used without first considering their suitability for the application. Each method has its own advantages and limitations and often it is necessary to obtain more than one type of protein assay for research applications.For additional information on protein assays, read the Protein Assays Handbook & Selection Guide.
The Bicinchoninic Acid (BCA) Protein Assay is a highly sensitive colorimetric assay that is compatible with detergent solubilized protein solutions, however is dramatically affected by the presence of..
An improved Coomassie Dye based protein assay based on the Bradford Protein Assay (1). This assay is suitable for the simple and rapid estimation of protein concentration. This assay is based on a sin..
The Micro Bicinchoninic Acid (BCA) Protein Assay is a highly sensitive colorimetric assay that is compatible with detergent solubilized protein solutions. This modification of the Bicinchoninic Acid (..
PhosphoQuant™ is specifically designed for quick and reliable determination of whether a purified protein is phosphorylated and the extent of phosphorylation. The assay is based on the alkaline hydrol..