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分子别名（Synonym）
IL-2 R beta & IL-2 R gamma,IL-2RB & IL-2RG
表达区间及表达系统（Source）
Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag (ILG-M5283) is expressed from human 293 cells (HEK293). It contains AA Ala 27 - Glu 240 (IL-2RB) & Trp 23 - Ala 263 (IL-2RG) (Accession # P16297-1 (IL-2RB) & P34902-1 (IL-2RG)).
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蛋白结构（Molecular Characterization）
Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag is produced by co-expression of IL-2RB and IL-2RG, has a calculated MW of 30.4 kDa (IL-2RB) and 35.0 kDa (IL-2RG). Subunit IL-2RB is fused with a polyhistidine tag at the C-terminus and subunit IL-2RG is fused with Twin-Strep tag at the C-terminus. The protein migrates as 50-55 kDa and 55-65 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>90% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
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.
产品数据图
电泳（SDS-PAGE）
Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag (Cat. No. ILG-M5283) is more than 85% and the molecular weight of this protein is around 110-125 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-BLI
Loaded Human IL-2 Protein, Fc Tag (Cat. No. IL2-H5269) on Protein A Biosensor, can bind Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag (Cat. No. ILG-M5283) with an affinity constant of 24.6 nM as determined in BLI assay (ForteBio Octet R8) (QC tested).
Protocol
Loaded Mouse IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag (Cat. No.ILG-M5283) on NTA Biosensor, can bind Human IL-2, Tag Free with an affinity constant of 1.57 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
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背景
Both Interleukin-2 receptor subunit beta and Interleukin-2 receptor subunit gamma are receptor for interleukin-2. Common subunit for the receptors for a variety of interleukins. Interacts with SHB upon interleukin stimulation. Probably in association with IL15RA, involved in the stimulation of neutrophil phagocytosis by IL15. This beta subunit is involved in receptor mediated endocytosis and transduces the mitogenic signals of IL2. IL2R exists in 3 different forms: a high affinity dimer, an intermediate affinity monomer (beta subunit), and a low affinity monomer (alpha subunit). The high and intermediate affinity forms also associate with a gamma subunit.
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