Human IL-21 R, Fc Tag (ILR-H5257) is expressed from human 293 cells (HEK293). It contains AA Cys 20 - Pro 236 (Accession # AAH04348).
Predicted N-terminus: Cys 20
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 51.6 kDa. As a result of glycosylation, the protein migrates as 60-70 kDa under reducing (R) condition, and 120-130 kDa under non-reducing (NR) condition (SDS-PAGE).
Less than 1.0 EU per μg by the LAL method.
>92% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 100 mM Glycine, pH7.5. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Human IL-21 R, Fc Tag on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 92%.
Immobilized Biotinylated Human IL-21, Fc,Avitag (Cat. No. IL1-H82F7) at 2 μg/mL (100 μL/well) can bind Human IL-21 R, Fc Tag (Cat. No. ILR-H5257) with a linear range of 4-63 ng/mL (QC tested).
Interleukin-21 receptor (IL21R) is also known as CD antigen CD360, Novel interleukin receptor (NILR), is a receptor for interleukin-21 and belongs to the type I cytokine receptor family or type 4 subfamily. IL21R contains two fibronectin type-III domains. IL21R is selectively expressed in lymphoid tissues and most highly expressed in thymus and spleen. IL21R transduces the growth promoting signal of IL21, and is important for the proliferation and differentiation of T cells, B cells, and natural killer (NK) cells.