Recombinant Human IL15RA&IL15 Fusion Protein (Fc Tag)
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- 表达系统： HEK293 Cells
- 蛋白编码： Q13261&P40933
- 应用性： Cell culture
| 别称 |
IL15RA&IL15;Interleukin-15;IL-15;IL15;IL-15 receptor subunit alpha;IL-15RA;IL-15R-alpha;interleukin-15 receptor subunit alpha
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| 表达系统 |
HEK293 Cells
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| 序列 |
Ile31-Asp96&Asn49-Ser162(Asn120Asp)
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| 蛋白编码 |
Q13261&P40933
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| 种属 |
Human
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| 计算分子量 |
46.9 kDa
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| 表观分子量 |
50-60 kDa
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| 标签 |
C-Fc
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| 生物活性 |
Measured in a cell proliferation assay using CTLL‑2 mouse cytotoxic T cells.The ED50 for this effect is 5-20 ng/ml.
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| 纯度 |
> 95 % as determined by reducing SDS-PAGE.
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| 内毒素 |
< 1.0 EU per μg 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 of 20mM PB, 8% Trehalose, 4% Mannitol, 0.02% Tween80 (w/v), pH 7.5.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| 复溶方法 |
Please refer to the printed manual for detailed information.
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| 背景 |
IL15RA is a high-affinity receptor for interleukin-15. Il15ra associates as a heterotrimer with the IL-2 receptor beta and gamma subunits to initiate signal transduction. It can signal both in cis and trans where IL15R from one subset of cells presents IL15 to neighboring IL2RG-expressing cells. Il15ra is expressed in special cells including a wide variety of Tand B cells and non-lymphoid cells.IL-15 is a cytokine that regulates T cell and natural killer cell activation and proliferation. IL-15 binds to the alpha subunit of the IL-15RA with high affinity. IL-15 also binds to the beta and gamma chains of the IL-2 receptor, but not the alpha subunit of the IL2 receptor. IL-15 is structurally and functionally related to IL-2. Both cytokines share some subunits of receptors, allowing them to compete for and negatively regulate each other's activity. The number of CD8+ memory T cells is controlled by a balance between IL-15 and IL-2. Despite their many overlapping functional properties, IL-2 and IL-15 are, in fact, quite distinct players in the immune system. IL-15 is constitutively expressed by a wide variety of cell types and tissues, including monocytes, macrophages and DCs.
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实验操作视频
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