Product Description |
Recombinant Biotinylated Human IL-2 R beta/CD122 Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus.It contains Ala27-Asp239. |
Product Background |
IL-2 R beta is a member of the cytokine receptor superfamily. Human IL-2 R beta cDNA encodes a 551 amino acid residue precursor Type I membrane protein with a 26 residue signal peptide, a 214 residue extracellular region, a 25 residue transmembrane region and a 286 residue cytoplasmic domain. 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. |
Product Category |
Recombinant Protein / Antibody discovery |
Protein |
IL-2 R beta/CD122 |
Synonyms |
CD122; IL-15 R beta; IL-2 R beta; IL-2R subunit beta; IL2RB; P70-75; p75; RP5-1170K4.6; IL-15 R β; IL-2 R β; IL-2R subunit β |
Accession |
|
Species |
Human |
Biotinylated |
yes |
Amino Acid Range |
Ala27-Asp239 |
Molecular Weight |
The protein has a predicted MW of 27.5 kDa. Due to glycosylation, the protein migrates to 40-50 kDa based on Bis-Tris PAGE result. |
Activity |
Immobilized Human IL-15Ra&IL-15, His Tag at 5ug/ml (100ul/well) on the plate. Dose response curve for Biotinylated Human IL-2 R beta, His Tag with the EC50 of 38.0ng/ml determined by ELISA (QC Test). The affinity constant of 0.079 uM as determined in SPR assay (Biacore T200). See testing image for detail. |
Product Tag |
C-His-Avi |
Expression System |
HEK293 |
Purity |
> 95% as determined by Bis-Tris PAGE;> 95% as determined by HPLC |
Endotoxin |
Less than 1EU per ug by the LAL method. |
Form |
Lyophilized |
Shipping |
Shipped at ambient temperature. |
Formulation |
Lyophilized from 0.22um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization. |
Reconstitution |
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water. |
Stability And Storage |
-20 to -80°C for 12 months as supplied from date of receipt.；-80°C for 3 months after reconstitution.；Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles. |
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Biotinylated Human IL-2 R beta, His-Avi Tag captured on CM5 Chip via anti-his antibody can bind Human IL-2, No Tag with an affinity constant of 0.079 uM as determined in SPR assay (Biacore T200). |
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Biotinylated Human IL-2 R beta, His-Avi Tag captured on CM5 Chip via Anti-His Antibody can bind Human IL-15, No Tag with an affinity constant of 12.91 nM as determined in SPR assay (Biacore T200). |
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Immobilized Human IL-15Ra&IL-15, His Tag at 5ug/ml (100ul/well) on the plate. Dose response curve for Biotinylated Human IL-2 R beta, His Tag with the EC50 of 38.0ng/ml determined by ELISA (QC Test). |
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Biotinylated Human IL-2 R beta on Bis-Tris PAGE under reduced condition. The purity is greater than 95%. |
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The purity of Biotinylated Human IL-2 R beta is greater than 95% as determined by SEC-HPLC. |
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