膜杰作
Star Staining
分子别名（Synonym）
IL13RA2,CD213A2,CT19,IL-13R,IL13BP
表达区间及表达系统（Source）
Human IL-13 R alpha 2, His Tag (IL2-H52H5) is expressed from human 293 cells (HEK293). It contains AA Asp 27 - Arg 343 (Accession # Q14627-1).
Predicted N-terminus: Asp 27
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus
The protein has a calculated MW of 39.0 kDa. The protein migrates as 45-55 kDa 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.
>90% as determined by SEC-MALS.
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.
电泳（SDS-PAGE）
Human IL-13 R alpha 2, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.
SEC-MALS
The purity of Human IL-13 R alpha 2, His Tag (Cat. No. IL2-H52H5) is more than 90% and the molecular weight of this protein is around 40-59 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Human IL-13, Fc Tag (Cat. No. IL3-H5256) at 5 μg/mL (100 μL/well) can bind Human IL-13 R alpha 2, His Tag (Cat. No. IL2-H52H5) with a linear range of 4-31 ng/mL (QC tested).
Protocol
Immobilized Human IL-13 R alpha 2, His Tag (Cat. No. IL2-H52H5) at 1 μg/mL (100 μL/well) can bind Monoclonal Anti-IL-13 R alpha 2 Antibody, Mouse IgG1 with a linear range of 0.1-3 ng/mL (QC tested).
Protocol
Immobilized Monoclonal Anti-IL-13 R alpha 2 Antibody, Mouse IgG1 at 1 μg/mL (100 μL/well) can bind Human IL-13 R alpha 2, His Tag (Cat. No. IL2-H52H5) with a linear range of 0.4-6 ng/mL (Routinely tested).
Protocol
活性（Bioactivity）-BLI
Loaded Human IL-13, Fc Tag (Cat. No. IL3-H5256) on Protein A Biosensor, can bind Human IL-13 R alpha 2, His Tag (Cat. No. IL2-H52H5) with an affinity constant of 6.09 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
背景（Background）
Interleukin-13 receptor subunit alpha-2 is also known as IL13Rα2, IL13Ra2 cluster of differentiation 213A2, CD213A2, CT19, IL-13R, IL13BP, and is a membrane bound protein that in humans is encoded by the IL13RA2 gene. IL13Rα2 is closely related to IL13Rα1, a subunit of the interleukin-13 receptor complex. This protein binds IL13 with high affinity, but lacks any significant cytoplasmic domain, and does not appear to function as a signal mediator. It is, however able to regulate the effects of both IL13 and IL4, despite the fact it is unable to bind directly to the latter. It is also reported to play a role in the internalization of IL13. IL13Rα2 is a component of the cell surface receptors, however, the majority exists in intracellular pools and in soluble form, and thus plays an opposite role as a potent IL13 antagonist compared with IL13Rα1. It also functions as an inhibitor of IL4-dependent pathway probably through the physical interaction between the short intracellular domain of and cytoplasmic domain of IL13Rα2 and the IL4Rα chain. In spite of the failed STAT signaling function, IL13Rα2 dose induce TGF-beta production and fibrosis. Additionally, IL13Rα2has been reported to be abundantly and specifically overexpressed in glioblastoma multiforme.
