IL-21 Protein (AA 23-155)
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北京 101111
Quick Overview for IL-21 Protein (AA 23-155) (ABIN7278715)
抗原
See all IL-21 (IL21) 蛋白蛋白类型
生物活性
宿主
资源
纯度
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产品特性
- AA 23-155
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原理
- IL-21 (human) (rec.) (untagged)
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特异性
- Human IL-21 (aa 23-155) with a N-terminal Met.
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产品特性
- Protein. Human IL-21 (aa 23-155) with a N-terminal Met. Source: E. coli. Endotoxin content: <0.01EU/μg protein (LAL test, Lonza). Lyophilized from 0.2μm-filtered solution in PBS. Purity: >95 % (SDS-PAGE). Interleukin-21 (IL-21) is a key factor in the transition between innate and adaptive immune responses secreted by activated T cells. The IL-21 receptor (IL-21R) is expressed in lymphoid tissue, in particular by NK, B, T and dendritic cells, macrophages and endothelial cells. Recent evidence suggests that IL-21 plays a supportive role in the proliferation of T and B cells and influences the cytolytic activity of natural killer cells. IL-21 has been shown to up-regulate genes associated with innate immunity and to inhibit the differentiation of naive T helper cells. IL-21 specifically inhibits IFN-gamma production from developing TH1 cells and is preferentially expressed by TH2 cells. Furthermore IL-21 has been identified as a growth and survival factor for human myeloma cells. IL-21/IL-21R interactions have a unique role in sequentially activating both innate and adaptive immune responses against poorly immunogenic tumors, leading to tumor rejection that is perforin dependent but IFN-gamma independent.
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内毒素水平
- <0.01EU/μg protein (LAL test, Lonza).
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Biological Activity Comment
- Measured by its ability to induce interferon-gamma secretion by human natural killer lymphoma NK-92 cells. The ED50 for this effect is 0.4-2ng/ml.
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Interleukin 21 (IL21) (AA 32-162) protein
IL21 宿主: 人 宿主: 大肠杆菌（E. Coli） Recombinant > 95 % as determined by Tris-Bis PAGE
Interleukin 21 (IL21) (AA 30-162) protein (Fc Tag)IL21 宿主: 人 宿主: HEK-293 Cells Recombinant The purity of the protein is greater than 95 % as determined by SDS-PAGE and Coomassie blue staining. ELISA
Interleukin 21 (IL21) (AA 30-162) (Active) proteinIL21 宿主: 人 宿主: HEK-293 Cells Recombinant >98 % as determined by SDS-PAGE. Active
Interleukin 21 (IL21) (AA 32-162) protein (His-Avi Tag,Biotin)IL21 宿主: 人 宿主: 大肠杆菌（E. Coli） Recombinant > 95 % as determined by Tris-Bis PAGE
Interleukin 21 (IL21) (AA 25-155) protein (His-IF2DI Tag)IL21 宿主: 人 宿主: 大肠杆菌（E. Coli） Recombinant Greater than 90 % as determined by SDS-PAGE. WB, ELISA
Interleukin 21 (IL21) (AA 18-146) protein (His-IF2DI Tag)IL21 宿主: 大鼠 宿主: 大肠杆菌（E. Coli） Recombinant Greater than 90 % as determined by SDS-PAGE. WB, ELISA
Interleukin 21 (IL21) protein (His tag)IL21 宿主: 小鼠 宿主: 大肠杆菌（E. Coli） Recombinant > 95 % as determined by SDS-PAGE
Interleukin 21 (IL21) (AA 1-162) protein (GST tag)IL21 宿主: 人 宿主: 小麦胚 Recombinant WB, ELISA, AP, AA
Interleukin 21 (IL21) (AA 18-146) protein (His-Avi Tag,Biotin)IL21 宿主: 小鼠 宿主: 大肠杆菌（E. Coli） Recombinant > 95 % as determined by Tris-Bis PAGE
Interleukin 21 (IL21) (AA 30-162) protein (His tag)IL21 宿主: 人 宿主: HEK-293 Cells Recombinant The purity of the protein is greater than 95 % as determined by SDS-PAGE and Coomassie blue staining.
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限制
- 仅限研究用
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状态
- Lyophilized
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浓度
- Lot specific
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缓冲液
- Lyophilized from 0.2μm-filtered solution in PBS.
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注意事项
- Avoid freeze/thaw cycles. PBS containing at least 0.1 % BSA should be used for further dilutions.
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储存条件
- 4 °C,-20 °C,-80 °C
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储存方法
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Short Term Storage: +4°C
Long Term Storage: -80°C
Use & Stability: Stable for at least 1 year after receipt when stored at -80°C. Working aliquots are stable for up to 3 months when stored at -20°C.
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- IL-21 (IL21) (Interleukin 21 (IL21))
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别名
- IL-21
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背景
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Alternate Names/Synonyms: Interleukin-21
Product Description: Interleukin-21 (IL-21) is a key factor in the transition between innate and adaptive immune responses secreted by activated T cells. The IL-21 receptor (IL-21R) is expressed in lymphoid tissue, in particular by NK, B, T and dendritic cells, macrophages and endothelial cells. Recent evidence suggests that IL-21 plays a supportive role in the proliferation of T and B cells and influences the cytolytic activity of natural killer cells. IL-21 has been shown to up-regulate genes associated with innate immunity and to inhibit the differentiation of naive T helper cells. IL-21 specifically inhibits IFN-gamma production from developing TH1 cells and is preferentially expressed by TH2 cells. Furthermore IL-21 has been identified as a growth and survival factor for human myeloma cells. IL-21/IL-21R interactions have a unique role in sequentially activating both innate and adaptive immune responses against poorly immunogenic tumors, leading to tumor rejection that is perforin dependent but IFN-gamma independent.
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分子量
- ~17kDa (SDS-PAGE)
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途径
- JAK/STAT Signaling, Regulation of Leukocyte Mediated Immunity, Positive Regulation of Immune Effector Process, Production of Molecular Mediator of Immune Response
抗原
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