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分子别名（Synonym）
IL-15,Interleukin-15,MGC9721
表达区间及表达系统（Source）
Human IL-15 Protein, Fc Tag (IL5-H5257) is expressed from human 293 cells (HEK293). It contains AA Asn 49 - Ser 162 (Accession # P40933-1).
Predicted N-terminus: Asn 49
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 39.2 kDa. The protein migrates as 48-55 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 0.01 EU per μg by the LAL method.
宿主蛋白残留（Host Cell Protein）
0.5 ng/µg of protein tested by ELISA.
宿主核酸残留（Host Cell DNA）
0.02 ng/μg of protein tested by qPCR.
无菌（Sterility）
Negative
支原体（Mycoplasma）
Negative.
纯度（Purity）
95% as determined by SDS-PAGE.
95% 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.
质量管理控制体系（QMS）
产品展示
电泳（SDS-PAGE）
Human IL-15 Protein, Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Human IL-15 Protein, Fc Tag (Cat. No. IL5-H5257) is more than 95% and the molecular weight of this protein is around 80-100 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Human IL-15 Protein, Fc Tag (Cat. No. IL5-H5257) at 2 μg/mL (100 μL/well) can bind Biotinylated Human IL-15 R alpha, Fc,Avitag (Cat. No. ILA-H82F4) with a linear range of 0.1-4 ng/mL (QC tested).
Protocol
Immobilized Human IL-15 Protein, Fc Tag (Cat. No. IL5-H5257) at 2 μg/mL (100 μL/well) can bind Human IL-2RB&IL-2RG Heterodimer Protein, His Tag&Twin-Strep Tag (Cat. No. ILG-H5283) with a linear range of 0.039-0.078 μg/mL (Routinely tested).
Protocol
活性（Bioactivity）-SPR
Biotinylated Human IL-15 R alpha, Fc,Avitag (Cat. No. ILA-H82F4) immobilized on CM5 Chip can bind Human IL-15 Protein, Fc Tag (Cat. No. IL5-H5257) with an affinity constant of 27.7 pM as determined in a SPR assay (Biacore 8K) (Routinely tested).
Protocol
活性（Bioactivity）-CELL BASE
Human IL-15 Protein, Fc Tag (Cat. No. IL5-H5257) stimulates proliferation of CTLL-2 cells. The specific activity of Human IL-15 Protein, Fc Tag is > 1.80 x 10^5 U/mg (QC tested).
Protocol
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