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分子别名（Synonym）
IL7Ra,CD127
表达区间及表达系统（Source）
Human IL-7 R alpha, Mouse IgG2a Fc Tag (IL7-H5258) is expressed from human 293 cells (HEK293). It contains AA Glu 21 - Gly 236 (Accession # P16871-1 (I66T,V138I)).
Predicted N-terminus: Glu 21
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 52.0 kDa. The protein migrates as 75-95 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
偶联（Conjugate）
Unconjugated
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 Tris with Glycine, Arginine and NaCl, pH7.5 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.
质量管理控制体系（QMS）
产品展示
电泳（SDS-PAGE）
Human IL-7 R alpha, Mouse IgG2a Fc 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).
活性（Bioactivity）-ELISA
Immobilized Human IL-7 Protein, premium grade (Cat. No. IL7-H4219) at 2 μg/mL (100 μL/well) can bind Human IL-7 R alpha, Mouse IgG2a Fc Tag (Cat. No. IL7-H5258) with a linear range of 4-63 ng/mL (QC tested).
Protocol
Biotinylated Human TSLP (R127A, R130A), His,Avitag (Cat. No. TSP-H82E0) immobilized at 2 μg/mL (100 μL/well) via precoated 5 μg/mL (100 μL/well) of Human TSLP R, Fc Tag (Cat. No. TSR-H525a), can bind can bind Human IL-7 R alpha, Mouse IgG2a Fc Tag (Cat. No. IL7-H5258) with a linear range of 1-39 ng/mL (Routinely tested).
Protocol
活性（Bioactivity）-SPR
Captured Human IL-7 R alpha, Mouse IgG2a Fc Tag (Cat. No. IL7-H5258) on CM5 chip via anti-mouse antibodies surface can bind ActiveMax® Human IL-7, Tag Free (Cat. No. IL7-H4219) with an affinity constant of 13.3 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Protocol
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