Recombinant Human Interleukin-21(rHu IL-21)

• Catalog Number: orb1631636
• Category: Proteins
• Description: Recombinant Human Interleukin-21(rHu IL-21)
• Form/Appearance: Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4.
• Purity: > 97 % by SDS-PAGE and HPLC analyses.
• UniProt ID: Q9HBE4
• MW: Approximately 15.4 kDa, a single non-glycosylated polypeptide chain containing 133 amino acids.
• Expression System: Escherichia coli.
• Source: Human
• Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human N1186 T cells is less than 20 ng/ml, corresponding to a specific activity of > 5.0 × 104 IU/mg.
• Storage: This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.
• Alternative names: Za11
• Note: For research use only