Detects human IL-2 R beta in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant human (rh) IL‑2 R alpha, rh gamma c, rhIL‑4 R, or rhIL‑6 R is observed.
Monoclonal Mouse IgG1 Clone # 27302
Protein A or G purified from ascites
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL‑2 R beta Ala27-Asp239 Accession # NP_000869
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
2.5 µg/106 cells
Human whole blood CD56+ natural killer cells
Measured by its ability to neutralize IL‑2-induced proliferation in the MO7e human megakaryocytic leukemic cell line. Avanzi, G. et al. (1988) Br. J. Haematol. 69:359. The Neutralization Dose (ND50) is typically 0.05-0.15 µg/mL in the presence of 30 ng/mL Recombinant Human IL‑2.
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Cell Proliferation Induced by IL‑2 and Neutralization by Human IL‑2 R beta Antibody. Recombinant Human IL‑2 (Catalog # 202-IL) stimulates proliferation in the MO7e human megakaryocytic leukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL‑2 (30 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human IL‑2 R beta Monoclonal Antibody (Catalog # MAB224). The ND50 is typically 0.05‑0.15 µg/mL.
IL‑2 R beta in Human Lymph Node. IL‑2 R beta was detected in immersion fixed frozen sections of human lymph node using 15 µg/mL Mouse Anti-Human IL‑2 R beta Monoclonal Antibody (Catalog # MAB224) overnight at 4 °C. Tissue was stained (red) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: IL-2 R beta
Functional IL-2 receptors can exist in two affinity states on cell surfaces, the high affinity complex consisting of heterotrimers of the alpha, beta, and gamma chains and the intermediate affinity complex comprising heterodimers of the beta and gamma chains. Individual beta chains and alpha chains exhibit low affinity IL-2 binding, and the gamma chain alone does not bind IL-2. In addition to their involvement in IL-2 mediated signal transduction, both the beta chain and gamma chain have been shown to be required for IL-15 mediated signaling. IL-2 R beta is a member of the cytokine receptor superfamily. Human IL-2 R beta cDNA encodes a 551 amino acid (aa) precursor Type I membrane protein with a 26 aa signal peptide, a 214 aa extracellular region, a 25 aa transmembrane region and a 286 aa cytoplasmic domain. A soluble IL-2 R beta has been identified in the culture supernatants of a human lymphoid cell line, YT, that displays IL-2 R beta. Soluble IL-2 R beta binds IL-2 with low affinity and is not an effective IL-2 antagonist on cells displaying the high or intermediate affinity IL-2 signaling receptors. Nevertheless, soluble IL-2 R beta binds IL-15 with sufficient affinity to neutralize IL-15 biological activities.
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The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.