活性重组蛋白 Recombinant Human IL18R1 / CD218a / IL18RA / IL1RRP Protein　重组蛋白

研究方向

IL-18R α 在 CD4+ 和 CD8+ T 细胞上表达，但在幼稚 T 细胞上不表达。
人IL-18Rα蛋白的氨基酸序列与小鼠IL-18Rα蛋白的同源性较低。
IL-18Rα是IL-18的受体。IL-18 分泌到细胞外，并逐步与免疫细胞质膜上的 IL-18 受体 α (Rα) 以及 IL-18 受体 β (Rβ) 结合。IL-18/IL-18Rα/IL-18Rβ 三元复合物形成并置 IL-18Rα 和 IL-18Rβ 的细胞内 Toll-Interleukin-1 受体结构域。然后，接头分子骨髓分化因子 88 (MyD88) 可能在 TRAM 的帮助下被招募。MyD88 进一步与 IL-1 受体相关激酶 (IRAK) 4 和 IRAK1/2 相互作用，形成称为 Myddosome 的大分子组装体，随后通过 TRAF6 激活 IKK。最后，信号激活 NF-κB 和丝裂原激活蛋白激酶通路7，从而上调各种炎症细胞因子的表达。
IL-18R α 与 IL-18 结合，IL-18 受体 β 形成信号复合物，诱导多种炎症细胞因子的表达。IL-18R α 抑制 rhIL-2 和 rhIL-18 联合刺激的 IFN-γ 产生。

生物活性

Measured by its ability to inhibit the Recombinant Human IL-18 induced response on KG-1 human acute myelogenous leukemia cells in the presence of Recombinant Human IL-18 R beta /IL-1 R7 Fc Chimera . The ED50 for this effect is 0.400-4.00 μg/mL.

种属

Human

表达宿主

HEK293 cells

Calculated MW

62.49 kDa

Observed MW

80-105 kDa

标签

C-hFc&His

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-18R1/CD218a Protein is produced by HEK293 expression system. The target protein is expressed with sequence (Glu20-Arg329) of human IL18R1/CD218a (Accession #NP_003846.1) fused with an Fc, 6×His tag at the C-terminus.

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

Measured by its binding ability in a functional ELISA.Immobilized IL18R1 Mouse mAb at 1μg/mL (100 μL/well) can bind Human IL18R1 with a linear range of 0.03-1.06ng/ml.

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。

背景信息

The protein encoded by this gene is a cytokine receptor that belongs to the interleukin 1 receptor family. This receptor specifically binds interleukin 18 (IL18), and is essential for IL18 mediated signal transduction. IFN-alpha and IL12 are reported to induce the expression of this receptor in NK and T cells. This gene along with four other members of the interleukin 1 receptor family, including IL1R2, IL1R1, ILRL2 (IL-1Rrp2), and IL1RL1 (T1/ST2), form a gene cluster on chromosome 2q. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.

基因ID

8809

Swiss Prot

Q13478

别名

IL18R1;CD218a;CDw218a;IL-1Rrp;IL18RA;IL1RRP;IL18R1/IL-18 R alpha