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Interleukin-7 human
| 产品编号： | 4084393 |
| 规格： | ≥98% (SDS-PAGE), recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture |
| 包装规格： | 5 μG |
| 产品类别： | 进口试剂 |
| 品牌： | Sigma-Aldrich |
| 优惠价： | 立即咨询 |
产品别名
Interleukin-7 human
IL-7
基本信息
| MDL number | MFCD00163948 |
| NACRES | NA.32 |
| General description【一般描述】 | The interleukin-7 human (IL-7) gene is mapped to human chromosome 8q21.13. It is a non-hematopoietic cell-derived cytokine. IL-7 is majorly produced by the fibroblastic stromal cells, dendritic cells, thymus epithelial cells and skin keratinocytes. Structurally, IL-7 takes up an up-up-down-down 4-helix bundle topology and has two crossover loops. |
| Biochem/physiol Actions【生化/生理作用】 | IL-7 helix A is crucial for its interaction with the interleukin-7 human receptor (IL-7Rα). It is reported to enhance immunity during viral infections and may be useful in cancer immunotherapy. Mutation in the IL-7 gene is implicated in CD4+ T-cell lymphopenia. Lymphoid cell growth factor which affects pre-B, pro-B and early T cells; supports the growth of early B cells and is mitogenic for thymocytes and co-mitogenic with PHA and Con A; stimulates the proliferation of CD4/CD8 cells. Interleukin-7 is a lymphoid cell growth factor which affects pre-B, pro-B and early T cells. It was first isolated by Namen in 1988. IL-7 has a number of known activities. It supports the growth of early B cells from long-term lymphoid bone marrow cultures. It is mitogenic for thymocytes and co-mitogenic with PHA and Con A. IL-7 also stimulates the proliferation of CD4/CD8 cells. The proliferative response of thymocytes to IL-7 is not affected by antibodies to the T cell growth factors such as IL-2, IL-4, and IL-6. Mature T cells respond to IL-7 and Con A, but not to IL-7 alone. Antibodies against IL-2 affect its activity, suggesting that it functions through IL-2 production. Human natural IL-7 is 25 kDa glycoprotein that has 6 cysteine residues which are important for biological activity. Human and mouse IL-7 have 60% amino acid sequence homology. |
| Physical form【外形】 | Lyophilized from a 0.2 μm filtered solution in 10 mM acetic acid containing 250 μg bovine serum albumin. |
产品性质
| Quality Level【质量水平】 | 200 |
| biological source【生物来源】 | human |
| recombinant【重组】 | expressed in E. coli |
| Assay【测定】 | ≥98% (SDS-PAGE) |
| form【形式】 | lyophilized powder |
| potency【效能】 | ≤0.500 ng/mL EC50 |
| mol wt【分子量】 | 25 kDa |
| packaging【包装】 | pkg of 5 μg |
| storage condition【储存条件】 | avoid repeated freeze/thaw cycles |
| technique(s) | cell culture | mammalian: suitable |
| impurities【杂质】 | endotoxin, tested |
| color【颜色】 | white |
| solubility【溶解性】 | water: soluble 0.005-0.010 mL |
| UniProt accession no.【UniProt登记号】 | P13232 |
| storage temp.【储存温度】 | −20℃ |
| Gene Information | human ... IL7(3574) |
安全信息
| Storage Class Code【储存分类代码】 | 13 - Non Combustible Solids |
| WGK | WGK 3 |
| Personal Protective Equipment【个人防护装备】 | Eyeshields, Gloves, type N95 (US) |
