膜杰作
Star Staining
分子别名（Synonym）
IL-5,TRF,IL5,Interleukin-5
表达区间及表达系统（Source）
Human IL-5 Protein, premium grade (IL5-H5214) is expressed from human 293 cells (HEK293). It contains AA Ile 20 - Ser 134 (Accession # P05113-1).
Predicted N-terminus: Ile 20
It is produced under our rigorous quality control system that incorporates a comprehensive set of tests including sterility and endotoxin tests. Product performance is carefully validated and tested for compatibility for cell culture use or any other applications in the early preclinical stage. When ready to transition into later clinical phases, we also offer a custom GMP protein service that tailors to your needs. We will work with you to customize and develop a GMP-grade product in accordance with your requests that also meets the requirements for raw and ancillary materials use in cell manufacturing of cell-based therapies.
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries no "tag".
The protein has a calculated MW of 13.1 kDa. The protein migrates as 18 kDa±3 kDa under reducing (R) condition, and 36 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 0.01 EU per μg by the LAL method.
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 24 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
质量管理控制体系（QMS）
电泳（SDS-PAGE）
Human IL-5 Protein, premium grade on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. 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-5 Protein, premium grade (Cat. No. IL5-H5214) is more than 95% and the molecular weight of this protein is around 30-43 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-CELL BASE
Human IL-5 Protein, premium grade (Cat. No. IL5-H5214) stimulates proliferation of 293F-STAT5/Luc-IL5RA-CD131-9 cells. The specific activity of Human IL-5 Protein, premium grade is > 3.00ⅹ10^6 IU/mg, which is calibrated against human IL-5 WHO International Standard (NIBSC code: 90/586) (QC tested).
Protocol
活性（Bioactivity）-ELISA
Immobilized Human IL-5 Protein, premium grade (Cat. No. IL5-H5214) at 5 μg/mL (100 μL/well) can bind Biotinylated Human IL-5 R alpha Protein, Avitag,Fc Tag (Cat. No. ILA-H82F5) with a linear range of 0.6-10 ng/mL (QC tested).
Protocol
+添加评论
产品推荐（Recommended Products）
背景（Background）
Interleukin 5 (IL5) is an interleukin produced by type-2 T helper cells and mast cells. IL-5 is a 115-amino acid (in human, 133 in the mouse) -long TH2 cytokine that is part of the hematopoietic family. Unlike other members of this cytokine family (namely interleukin 3 and GM-CSF), this glycoprotein in its active form is a homodimer. Interleukin-5 has long been associated with the cause of several allergic diseases including allergic rhinitis and asthma, wherein a large increase in the number of circulating, airway tissue, and induced sputum eosinophils have been observed. Given the high concordance of eosinophils and, in particular, allergic asthma pathology, it has been widely speculated that eosinophils have an important role in the pathology of this disease. Drugs that target IL-5 are mepolizumab and reslizumab.
