膜杰作
Star Staining
分子别名（Synonym）
IL-15,Interleukin-15,MGC9721
表达区间及表达系统（Source）
Human IL-15, premium grade (IL5-H4117) is expressed from E. coli cells. It contains AA Asn 49 - Ser 162 (Accession # P40933-1).
Predicted N-terminus: Met
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.
GMP-L15H13 is the GMP version of this IL5-H4117. These two proteins display indistinguishable performance profiles, thereby ensuring a seamless transition for end users from early preclinical stag to later clinical phases.
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries no "tag".
The protein has a calculated MW of 12.9 kDa. The protein migrates as 13 kDa±3 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE).
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.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in 25 mM Histidine, pH6.2 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）
电泳（SDS-PAGE）
Human IL-15, premium grade 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).
活性（Bioactivity）-CELL BASE
Human IL-15, premium grade (Cat. No. IL5-H4117) stimulates proliferation of CTLL-2 cells. The specific activity of Human IL-15, premium grade is > 8.00ⅹ10^6 IU/mg, which is calibrated against human IL-15 WHO International Standard (NIBSC code: 95/554) (QC tested).
Protocol
Human IL-15, premium grade (Cat. No. IL5-H4117), designed for preclinical stage, has the same activity and performance with GMP Human IL-15 (Cat. No. GMP-L15H13), which enables a seamless transition from preclinical development to clinical phases.
Protocol
活性（Bioactivity）-ELISA
Immobilized Human IL-15, premium grade (Cat. No. IL5-H4117) at 2 μg/mL (100 μL/well) can bind Human IL-15 R alpha, Fc Tag (Cat. No. ILA-H5253) with a linear range of 0.6-39 ng/mL (Routinely tested).
Protocol
活性（Bioactivity）-SPR
Human IL-2 R beta, Fc Tag (Cat. No. ILB-H5253) captured on CM5 chip via anti-human IgG Fc antibody, can bind Human IL-15, premium grade (Cat. No. IL5-H4117) with an affinity constant of 9.5 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Protocol
活性（Bioactivity）-BLI
Loaded Human IL-2 R beta, Fc Tag (Cat. No. ILB-H5253) on Protein A Biosensor, can bind Human IL-15, premium grade (Cat. No. IL5-H4117) with an affinity constant of 10.2 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
稳定性（Stability）
The Cell based assay shows batch-to-batch consistency between Acro's GMP and PG IL-15.
+添加评论
- 医疗检测
- 这个价格还是挺划算的，感觉这个不比GMP级别的差多少，可能是我们没有那么高的要求吧，不过作为国产的确实已经很不错了，主要是质量稳定，货期快，比较适合我们科研的
- 2022-11-18
- 158XXXXXXX8
- 多次购买acro的蛋白了！Acro公司产品包装很好、发货速度快，满满的干冰，保证了运输途中的低温度，防止蛋白降解。蛋白纯度高，用来做体外功能试验和亲和力检测，功能验证结果很好！多次合作伙伴！！超赞!!相比于其他厂家性价比高，值得信赖!!强烈推荐！！
- 2023-5-2
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背景（Background）
Interleukin 15 is also known as IL15, IL-15, and is a cytokine with structural similarity to IL-2. Like IL-2, IL-15 binds to and signals through the IL-2/IL-15 beta chain (CD122) and the common gamma chain (gamma-C, CD132). IL-15 is secreted by mononuclear phagocytes (and some other cells) following infection by virus(es). This cytokine induces cell proliferation of natural killer cells; cells of the innate immune system whose principal role is to kill virally infected cells. Interleukin 15 (IL-15) regulates T and natural killer (NK) cell activation and proliferation. Survival signals that maintain memory T cells in the absence of antigen are provided by IL-15. This cytokine is also implicated in NK cell development. In rodent lymphocytes, IL-15 prevents apoptosis by inducing an apoptosis inhibitor, BCL2L1/BCL-x(L). IL-15 has been shown to enhance the anti-tumor immunity of CD8+ T cells in pre-clinical models. A phase I clinical trial to evaluate the safety, dosing, and anti-tumor efficacy of IL-15 in patients with metastatic melanoma and renal cell carcinoma (kidney cancer) has begun to enroll patients at the National Institutes of Health.
