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IL-21 Protein, Rat, Recombinant (His)

Catalog No. TMPY-03585

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.

IL-21 Protein, Rat, Recombinant (His)

IL-21 Protein, Rat, Recombinant (His)

Catalog No. TMPY-03585
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.
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100 μg$7737-10 days
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Product Information

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
TagC-His
Accession NumberA3QPB9
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 Weight16.64 kDa (predicted); 20 kDa (reducing conditions)
Endotoxin< 1.0 EU/μg of the protein as determined by the LAL method.
FormulationLyophilized 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.
ShippingIn 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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Please read the User Guide of Recombinant Proteins for more specific information.