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Recombinant Human CD122/IL-2RB Protein (Active)

£1,012.00 – £1,265.00 excluding VAT

SKU FAS-031478-P Category Tag

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.

Size

100µg
Active Protein

Active protein
Activity

1. Measured by its binding ability in a functional ELISA. 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.
Protein Construction

The mature form of human IL2 Rβ (NP_000869.1) extracellular domain (Met 1-Asp 239) with five amino acids (DDDDK) at the C-terminus was expressed and purified.
Sequence

Met 1-Asp 239
Fusion Tag
Accession

NP_000869.1
Species

Human
Expressed Host

HEK293 Cells
Shipping

This product is provided as lyophilized powder which is shipped with ice packs.
Purity

> 90 % as determined by reducing SDS-PAGE.
Endotoxin

< 1.0 EU per µg as determined by the LAL method.
Stability and 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.
Mol Mass

25.2 kDa
AP Mol Mass

40 kDa
Formulation

Lyophilized from sterile 100mM NaCl, 50mM Tris, pH 7.5
Research Areas

Signal Transduction, immunology, Stem cells
Reconstitution

Please refer to the printed manual for detailed information.

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