重组人白细胞介素18 / Recombinant IL-18,Human,GMP
产品编号 规格 价格 货期
CM022-100HPG 100 ug ¥11500.00 请询
CM022-1000HPG 1 mg ¥52000.00 请询
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产品简介
背景描述 Interleukin-18 (IL-18) belongs to the IL-1 superfamily and is constitutively produced by macrophages, dendritic cells (DCs) and other cells. IL-18 binds to the receptor of IL-18 (IL-18R) and initiate the recruitment and heterodimerization of the IL-18RAcP, leading to downstream activation of NF-κB. After stimulation with IL-18, multiple cytokines including IFN-γ, IL-13, IL-4, IL-8, and GM-CSF and both Th1 and Th2 lymphokines could be produced by different cells. As an immunoregulaory cytokine, IL-18 can promote development of T helper 1 (Th1) cells, which maximizes the production of IFN by synergistically stimulating to mature Th1 effectors in combination with IL-12. On the contrary, it inhibits the production of the anti-inflammatory cytokine IL-10. In addition, IL-18 exhibits multiple proinflammatory functions, such as increases in cell adhesion molecules, nitric oxide synthesis, and chemokine production.
别称 interleukin 18, IGIF, IL-1g, IL1F4, IL18
蛋白编码 Q14116
分子量 The protein has a calculated MW of 18.2 kDa. The protein migrates as 15 kDa under reducing condition (SDS-PAGE analysis).
表达系统 Escherichia coli
纯度 >97% as determined by SDS-PAGE analysis.
生物活性 Measure by its ability to induce IFN gamma secretion in KG-1 cells. The ED₅₀ for this effect is <6 ng/mL.
内毒素检测 <0.05 EU per 1 μg of the protein by the LAL method.
蛋白序列 YFGKLESKLSVIRNLNDQVLFIDQGNRPLFEDMTDSDCRDNAPRTIFIISMYKDSQPRGMAVTISVKCEKISTLSCENKIISFKEMNPPDNIKDTKSDIIFFQRSVPGHDNKMQFESSSYEGYFLACEKERDLFKLILKKEDELGDRSIMFTVQNED
蛋白标签 Tag Free
产品形式 Lyophilized from a 0.2 µm filtered solution of PBS, pH 7.4.
产品储存/运输
储存 Lyophilized protein should be stored at -20°C for 1 year. Upon reconstitution, store at 2°C to 8°C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20°C or -80°C for 3-6 months. Avoid repeated freeze/thaw cycles.
运输 Blue Ice
产品使用
Centrifuge at 3000 rpm for 5 mins before opening. It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 0.5 mg/mL and incubate the stock solution at RT for at least 20 min to ensure sufficient re-dissolved. Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
实验数据展示
SDS- PAGE analysis of GMP human IL-18 GMP Human IL-18 Protein, Tag Free, E. coli induces IFN gamma secretion in KG-1 cells, with the ED₅₀ < 6 ng/mL.
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