Recombinant Rat IL-18 Protein (Sumo Tag)
- 货号：GPER0259
Price:
| 别称 |
Interleukin-18;IGIF;Interferon-gamma-inducing factor
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| 表达系统 |
E.coli
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| 序列 |
His37-Ser194
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| 蛋白编码 |
P97636
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| 种属 |
Rat
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| 计算分子量 |
33 kDa
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| 表观分子量 |
37 kDa
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| 标签 |
N-Sumo
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| 生物活性 |
Not validated for activity
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| 纯度 |
> 95% as determined by reducing SDS-PAGE.
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| 内毒素 |
< 10 EU/mg of the protein as determined by the LAL method
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| 保存条件 |
Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
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| 运输条件 |
This product is provided as lyophilized powder which is shipped with ice packs.
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| 制剂 |
Lyophilized from a 0.2 μm filtered solution in PBS with 5% Trehalose and 5% Mannitol.
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| 复溶方法 |
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.
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| 背景 |
Interleukin-18 (IL-18）is a protein which belongs to the IL-1 family. It is expressed as a 24 kDa precursor by endothelial and epithelial cells, keratinocytes, gamma δ T cells, and phagocytes. Mature mouse IL-18 shares 63% and 91% amino acid sequence identity with mouse and rat IL-18, respectively. IL-18 binds to the widely expressed IL-18 R alpha which recruits IL-18 R beta to form the signaling receptor complex. Its bioactivity is negatively regulated by interactions with IL-18 binding proteins and virally encoded IL-18BP homologs. It augments natural killer cell activity in spleen cells and stimulates interferon gamma production in T-helper type I cells. 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.
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