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Recombinant Human CD122/IL-2RB Protein (Active)
SKU: PKSH031478-100
Recombinant Human CD122/IL-2RB Protein (Active)
| SKU # | PKSH031478 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | P70, IL2RB, CD122, IL15RB, P70-75, IL-2Rβ, p75, IL-2RB, Interleukin-2 receptor subunit beta, IL-2 receptor subunit beta, IL-2R subunit beta, High affinity IL-2 receptor subunit beta, Interleukin-15 receptor subunit beta, p70-75 (p75), IL-2R&, beta, CD122 antigen, High affinity IL 2 receptor beta subunit, High affinity IL 2 receptor subunit beta, IL2 receptor, Interleukin 2 receptor beta, interleukin 2 receptor subunit beta, P70 75, P7075 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Met 1-Asp 239 |
| Accession | NP_000869.1 |
| Calculated Molecular Weight | 25.2 kDa |
| Observed Molecular Weight | 40 kDa |
| Tag | None |
| Bio-activity | 1. Immobilized human IL2Rb at 10 μg/ml (100 μl/well) can bind biotinylated human IL2, The EC50 of biotinylated human IL2 is 0.1-0.24 μg/mL. 2. Measured by its ability to inhibit IL15-dependent proliferation of MO7e human megakaryocytic leukemic cells in the presence of 4.0 ng/mL of recombinant human IL-15.The ED50 for this effect is 1-4μg/mL. |
Properties
| Purity | > 90 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from sterile 100mM NaCl, 50mM Tris, pH 7.5 Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Interleukin-2 receptor (IL-2R) also known as High affinity IL-2 receptor subunit beta, IL-2 receptor subunit beta, and IL-2RB, is involved in T cell-mediated immune responses. CD122/IL-2RB is present in 3 forms with respect to ability to bind interleukin 2. The low affinity form is a monomer of the alpha subunit and is not involved in signal transduction. The intermediate affinity form consists of an alpha/beta subunit heterodimer, while the high affinity form consists of an alpha/beta/gamma subunit heterotrimer. Both the intermediate and high affinity forms of CD122/IL-2RB are involved in receptor-mediated endocytosis and transduction of mitogenic signals from interleukin 2. CD122/IL-2RB expression was restricted to the earliest B220+ cells (CD43+CD24-; prepro B cells; fraction A) that proliferate vigorously to IL-2 in the absence of any stromal cells, but not to IL-15. The high-affinity form of this receptor is expressed on activated T lymphocytes, activated B lymphocytes, and activated macrophages. CD122/IL-2RB plays a role in regulating normal lymphocyte development.