Description

SA10 Streptavidin (formerly ProZyme) is our longest-established streptavidin product, being a widely-used workhorse of the industry for over 25 years. It is purified to a high degree from fermentations of Streptomyces avidinii and has a molecular weight of 52 kDa (also known as ‘core’ streptavidin). The specific activity of SA10 is =14.0 U/mg protein, and that of SA26 is =15.0 U/mg protein, when measured by the industry-standard HABA dye-binding assay. The specific activity measurement is higher still when measured by the alternative biotin-titration assay used by some suppliers. Streptavidin, 10 mg. Biotin binding protein (Streptomyces avidinii). Specific activity: = 14.0 U/mg protein MW: ~52, 000 Daltons (based on MS), composed of 4 identical polypeptide chains. Predominantly a single band by SDS PAGE. Supplied lyophilized, contains ~0.9 mg protein/mg lyophilizate. This product is only available to U.S. Domestic Customers. For research use only, not to be used in diagnostic procedures.