Human IL-4 Protein
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产品编号
KMP2935
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别名
白细胞介素 4, Human IL-4 Protein, IL-4
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目录价格
联系客服获取报价RMB
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规格
- 50ug
- 100ug
- 200ug
产品介绍
| Alias | 白细胞介素 4, Human IL-4 Protein, IL-4 |
| Catalog Number | KMP2935 |
| Product Description | The Human IL-4 Protein(KMP2935) is produced in E. coli. The target gene encoding the IL4 (P05112-1) (His25-Ser153) is expressed with a N-terminal Met. The purified protein is biotinylated in vitro. |
| Molecular Name | IL-4 |
| Species | Human |
| Host | E. coli |
| Size | 50ug, 100ug, 200ug |
| Protein Family | CD molecule |
| Purity | >90% as determined by SDS-PAGE |
| Concentration | 联系销售经理获得最新批次的浓度 |
| Purification | Affinity purification |
| Endotoxin | <1.0 EU/ug determined by the LAL method |
| Formulation | PBS |
| Background | Interleukin-4, also known as IL4, is a secreted protein that belongs to the IL-4 / IL-13 family. Interleukin-4 / IL4 has many biological roles, including the stimulation of activated B-cell and T-cell proliferation. It enhances both secretion and cell surface expression of IgE and IgG1. Interleukin-4 / IL4 also regulates the expression of the low-affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Interleukin-4 is essential for the switching of B cells to IgE antibody production and the maturation of T helper (Th) cells toward the Th2 phenotype. It participates in at least several B-cell activation processes as well as other cell types. However, studies show that double mutant (Q116D, Y119D) of the murine IL4 protein (QY), both glutamine 116 and tyrosine 119, which binds to the IL4 receptor alpha, completely inhibits in a dose-dependent manner the IL4-induced proliferation of lipopolysaccharide-stimulated murine splenic B-cells, of the murine T cell line CTLL-2, and the murine pre-B-cell line BA/F3. QY also inhibited the IL4-stimulated up-regulation of CD23 expression by lipopolysaccharide-stimulated murine splenic B-cells and abolished tyrosine phosphorylation of the transcription factor Stat6 and the tyrosine kinase Jak3 in IL4-stimulated BA/F3 cells. |
| Application | WB, ELISA |
| Recommended Dilution | ELISA: 1:100-1:1000 |
| Cross-reactivity | No cross-reactivity with other antigens or proteins. |
| Predicted Molecular Weight | 15.1 kDa |
| Predicted N Terminus | His 25 |
| Reconstitution | Not applicable. The product is supplied as a ready-to-use liquid formulation. |
| Storage Condition | Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles. |
| Remarks | 收到产品后请立即按保存条件储存；使用前短暂离心，使内容物集中于管底；避免反复冻融。 |
| Shipping Condition | In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. If supplied as liquid, the proteins will be shipped with dry ice. |
| Stability | Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles. |
| Molecular Weight | 15.1 kDa |
| Cross-reactivity | No cross-reactivity with other antigens or proteins. |
| Note | 仅供科研使用 |
| ELISA IC50(ppb) | ≥ 1:1000 |
| Function | Interleukin-4, also known as IL4, is a secreted protein that belongs to the IL-4 / IL-13 family. Interleukin-4 / IL4 has many biological roles, including the stimulation of activated B-cell and T-cell proliferation. It enhances both secretion and cell surface expression of IgE and IgG1. Interleukin-4 / IL4 also regulates the expression of the low-affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Interleukin-4 is essential for the switching of B cells to IgE antibody production and the maturation of T helper (Th) cells toward the Th2 phenotype. It participates in at least several B-cell activation processes as well as other cell types. However, studies show that double mutant (Q116D, Y119D) of the murine IL4 protein (QY), both glutamine 116 and tyrosine 119, which binds to the IL4 receptor alpha, completely inhibits in a dose-dependent manner the IL4-induced proliferation of lipopolysaccharide-stimulated murine splenic B-cells, of the murine T cell line CTLL-2, and the murine pre-B-cell line BA/F3. QY also inhibited the IL4-stimulated up-regulation of CD23 expression by lipopolysaccharide-stimulated murine splenic B-cells and abolished tyrosine phosphorylation of the transcription factor Stat6 and the tyrosine kinase Jak3 in IL4-stimulated BA/F3 cells. |
| Product Declaration | 该产品仅供科研使用，不可直接用于人体或注射。 |
| Temperature Range | -20℃ ~ -80℃ |
| Solubility | 产品为即用型液体，无需复溶。 |
| Appearance | Liquid |
| Product Full Name | Human IL-4 Protein |
| Preservative Solution | PBS |
| Usage Method | 冻干粉请按“复溶”说明用无菌去离子水复溶后使用，液体产品可直接使用；具体工作浓度请参考“推荐稀释比例”。 |
| Target | IL-4 |
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