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IL-21 Protein, Rat, Recombinant (His) is expressed in Baculovirus insect cells with His tag. The predicted molecular weight is 16.64 kDa and the accession number is A3QPB9.
Pack Size | Price | Availability | Quantity |
---|---|---|---|
100 μg | $773 | 7-10 days |
Biological Activity | Measured by its ability to induce Interferon gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is typically 2-8 ng/ml. |
Description | IL-21 Protein, Rat, Recombinant (His) is expressed in Baculovirus insect cells with His tag. The predicted molecular weight is 16.64 kDa and the accession number is A3QPB9. |
Species | Rat |
Expression System | Baculovirus Insect Cells |
Tag | C-His |
Accession Number | A3QPB9 |
Synonyms | interleukin 21 |
Construction | A DNA sequence encoding the rat IL21 (NP_001102413.1) (Met1-Ser146) was expressed with a polyhistide tag at the C-terminus. Predicted N terminal: His 18 |
Protein Purity | > 90 % as determined by SDS-PAGE |
Molecular Weight | 16.64 kDa (predicted); 20 kDa (reducing conditions) |
Endotoxin | < 1.0 EU/μg of the protein as determined by the LAL method. |
Formulation | Lyophilized from a solution filtered through a 0.22 μm filter, containing 20 mM Tris, 500 mM NaCl, 10% glycerol, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
Reconstitution | A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information. |
Stability & Storage | It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
Shipping | In general, Lyophilized powders are shipping with blue ice. |
Research Background | IL21 belongs to the IL-15/IL-21 family. It is a cytokine with immunoregulatory activity. Cytokines are proteinaceous signaling compounds that are major mediators of the immune response. They control many different cellular functions including proliferation, differentiation, and cell survival/apoptosis but are also involved in several pathophysiological processes including viral infections and autoimmune diseases. Cytokines are synthesized under various stimuli by a variety of cells of both the innate (monocytes, macrophages, dendritic cells) and adaptive (T- and B-cells) immune systems. IL21 is expressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes. It may promote the transition between innate and adaptive immunity. IL-21 has been tried as a therapy for alleviating allergic responses. It can significantly decrease pro-inflammatory cytokines produced by T cells in addition to decreasing IgE levels in a mouse model for rhinitis (nasal passage inflammation).Cancer ImmunotherapyImmune CheckpointImmunotherapyTargeted Therapy |
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