Recombinant Human IL-18 Protein (RP00006)

Recombinant Human IL-18 Protein was determined by SDS-PAGE with Coomassie Blue, showing a band at 18 kDa.

Immobilized recombinant Human IL18 at 5μg/mL (100μL/well) can bind recombinant Human IL18BPa with a linear range of 0.156-1.372μg/mL.

Recombinant Human IL-18 induce IFN-gamma secretion by KG1 human acute myelogenous leukemia cells in the presence of TNF-alpha(Catalog: RP00001). The ED₅₀ for this effect is 1.44-5.76 ng/mL, corresponding to a specific activity of 1.7×10⁵~6.9×10⁵ units/mg.

All(3)|

货号: RP00006

详细信息

种属

Human

表达宿主

E. coli

Calculated MW

18.22 kDa

Observed MW

18 kDa

标签

No tag

纯度

> 95% by SDS-PAGE.

内毒素

< 0.1 EU/μg of the protein by LAL method.

制剂

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.

描述

Recombinant Human IL-18 Protein is produced by E. coli expression system. The target protein is expressed with sequence (Tyr37-Asp193) of human IL-18 (Accession #NP_001553.1).

储存

Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt.
After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.未开盖的干粉蛋白在 -20°C至-80°C可保存12个月；
复溶之后，蛋白溶液在-20°C及以下可保存3个月，在2-8℃可保存1周。

生物活性

1.Measured by its binding ability in a functional ELISA. Immobilized recombinant Human IL18 at 5 μg/mL (100μL/well) can bind recombinant Human IL18BPa with a linear range of 0.156-1.372 μg/mL.
2.Measured by its ability to induce IFN-gamma secretion by KG1 human acute myelogenous leukemia cells in the presence of TNF-alpha(Catalog: RP00001). The ED₅₀ for this effect is 1.44-5.76 ng/mL, corresponding to a specific activity of 1.7×10⁵~6.9×10⁵ units/mg.

复溶

Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.收到重组蛋白产品之后请检查蛋白冻干粉末是否贴于瓶底，如果粉末浮起，开盖之前请先低温离心。将蛋白用说明书中指定的缓冲液复溶至0.1-0.5 mg/mL（请注意蛋白复溶浓度不能低于0.1 mg/mL），室温平衡5-10 min保证充分溶解，复溶过程中请不要剧烈涡旋及吹打蛋白溶液。如需长期储存，建议复溶时添加载体蛋白或者稳定剂（如0.1% BSA, 5% HSA, 10% FBS 或者 5% 海藻糖），同时将复溶后的蛋白溶液按照需求进行分装，储存于-20°C至-80°C，随取随用，避免反复冻融。

蛋白复溶计算器

请在蛋白复溶计算器中输入蛋白总质量和所需终浓度，快速计算您需要添加溶液的体积吧！

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折叠内容

背景信息

Interleukin-18 (IL-18, also known as interferon-gamma inducing factor) is a proinflammatory cytokine that belongs to the IL-1 superfamily and is produced by macrophages and other cells. IL-18 activation is induced by infection or tissue damage and contributes to disease pathology in chronic inflammation. In the presence of IL-12 or IL-15, IL-18 enhances anti-viral Th1 immune responses by inducing IFN-gamma production and the cytolytic activity of CD8+ T cells and NK cells. In the absence of IL-12 or IL-15, however, IL-18 promotes production of the Th2 cytokines IL-4 and IL-13 by CD4+ T cells and basophils. In the presence of IL-1 beta or IL-23, IL-18 induces the antigen-independent production of IL-17 by gamma δ T cells and CD4+ T cells.IL-18 also promotes myeloid dendritic cell maturation and triggers neutrophil respiratory burst.In cancer, IL-18 exhibits diverse activities including enhancing anti-tumor immunity, inhibiting or promoting angiogenesis, and promoting tumor cell metastasis.

基因ID

3606

Swiss Prot

Q14116

别名

IL18;IGIF;IL-18;IL-1g;IL1F4

研究领域