Interleukin-2 receptor subunit beta (UniProt: P16297; also known as IL-2 receptor subunit beta, IL-2R subunit beta, IL-2RB, High affinity IL-2 receptor subunit beta, p70-75, CD122) is encoded by the Il2rb gene (Gene ID: 16185) in murine species. IL-2R is a non-covalent dimer of an alpha and a beta subunit. It can exist as a high affinity dimer, an intermediate affinity monomer of beta subunit, and as a low affinity monomer of alpha subunit. IL-2R beta is a single-pass type I membrane protein. The beta subunit is involved in receptor mediated endocytosis and it transduces the mitogenic signals of IL-2. IL-2R beta is synthesized with a signal peptide (aa 1-26), which is cleaved off to produce the mature form that has an extracellular domain (aa 27-240), a transmembrane domain (aa 241-268), and a long cytoplasmic domain (aa 269-539). IL-2R beta contains a WSXWS motif (aa 221-225), which is essential for its proper folding and thereby efficient intracellular transport. It also has a Box 1 motif (aa 281-289) that is required for JAK interaction and/or activation.
Clone TM-beta 1 is a rat monoclonal antibody that detects IL-2R beta subunit in murine species.
TART-mB whole cells
Neutralizing Analysis: Freshly isolated mouse splenocytes pretreated with different amounts of MABF951, Anti-IL-2R beta (CD122), clone TM- 1 showed a co-relation of the amount of antibody used vs percent of cells stained with FITC-labeled antibody. In antibody titration, as the concentration of unlabeled anti-IL-2R beta (CD122) is decreased less inhibition is observed as a result.
Inhibits Activity/Function: A representative lot abolished the binding of IL2 ligand to IL-2R beta (CD122). (Tanaka, T., et. al. (1991). J Immunol. 147(7):2222-8; Yokoyama, S., et. al. (2009). Proc Natl Acad Sci USA. 106(37):15849-54).
Flow Cytometry Analysis: A representative lot detected IL-2R beta (CD122) in Flow Cytometry applications (Tanaka, T., et. al. (1991). J Immunol. 147(7):2222-8).
Western Blotting Analysis: A representative lot detected IL-2R beta (CD122) in Western Blotting applications (Tanaka, T., et. al. (1991). J Immunol. 147(7):2222-8).
Immunoprecipitation Analysis: A representative lot immunoprecipitated IL-2R beta (CD122) in Immunoprecipitation applications (Tanaka, T., et. al. (1991). J Immunol. 147(7):2222-8).
Immunocytochemistry Analysis: A representative lot detected IL-2R beta (CD122) in Immunocytochemistry applications (Tanaka, T., et. al. (1991). J Immunol. 147(7):2222-8).
Anti-IL-2R beta (CD122), clone TM-beta1, Cat. No. MABF951, is a rat monoclonal antibody that detects IL-2R beta and has been tested for use in Flow Cytometry, Function assay, Immunocytochemistry, Immunoprecipitation, Neutralizing, and Western Blotting.
Inflammation & Immunology
Isotype testing: Identity Confirmation by Isotyping test.
Isotyping Analysis: The identity of this monoclonal antibody is confirmed by isotyping test to be mouse IgG2b.
60.54 kDa calculated
Purified rat monoclonal antibody IgG2b in PBS without azide.
Protein G purified
Storage and Stability
Stable for 1 year at -20°C from date of receipt. Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.
Concentration: Please refer to lot specific datasheet.
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