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IL-7 human
产品编号: | 4101951 |
规格: | Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC) |
包装规格: | 10 μG |
产品类别: | 进口试剂 |
品牌: | Sigma-Aldrich |
优惠价: | 立即咨询 |
产品别名
IL-7 human
Lymphopoietin 1 (LP-1)
pre-B cell factor
基本信息
NACRES | NA.32 |
General description【一般描述】 | IL7 (interleukin 7) was first identified in 1988 in a bone marrow culture as a factor that facilitated murine B cell precursors growth. It is a cytokine produced by non-lymphoid cells in lymphoid organs. In humans, it is also produced by keratinocytes, peripheral blood dendritic cells,follicular dendritic cells, intestinal epithelial cells, hepatic tissue, endothelial cells, smooth muscle cells and fibroblasts. IL7 gene is localized to human chromosome 8q12-q13. It is a glycoprotein with a four a-helix structure with a hydrophobic core. Recombinant human IL-7 is a 17.4 kDa protein containing 153 amino acid residues. |
Biochem/physiol Actions【生化/生理作用】 | IL7 (interleukin 7) is crucial for lymphocyte survival and development. It is required for the survival, proliferation and the rearrangement of certain TCR (T cell receptor) genes in earliest thymus stem cells. During later stages, in thymus, it is essential for the positive selection of CD8 cells. IL7 is also essential for the survival and homeostatic proliferation of mature T cells which have left the thymus. In patients undergoing allogeneic haematopoietic stem cell transplantation (HSCT), increased IL-7 plasma levels in the early post-transplant period is linked with suppressed T cell counts and elevated risks of acute graft-versus-host disease (aGVHD) and mortality. IL7 shows varied tear expression levels during different stages of Graves′ ophthalmopathy (GO), and thus, might be implicated in the pathogenesis of GO. |
Physical form【外形】 | Lyophilized from 10 mM Acetic Acid. |
Reconstitution【重悬】 | Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. This solution can be stored at 2-8℃ for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20℃ to -80℃. |
产品性质
biological source【生物来源】 | human |
recombinant【重组】 | expressed in E. coli |
Assay【测定】 | ≥98% (HPLC) ≥98% (SDS-PAGE) |
form【形式】 | lyophilized |
potency【效能】 | ≤0.5 ng/mL ED50 |
mol wt【分子量】 | 17.4 kDa |
packaging【包装】 | pkg of 10 μg |
impurities【杂质】 | <0.1 EU/μg endotoxin, tested |
color【颜色】 | white to off-white |
UniProt accession no.【UniProt登记号】 | P13232 |
shipped in【运输】 | wet ice |
storage temp.【储存温度】 | −20℃ |
Gene Information | human ... IL7(3574) |
安全信息
Pictograms【象形图】 | GHS07 |
Signal word【警示用语:】 | Warning |
Hazard Statements | H315 - H319 |
Precautionary Statements | P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313 |
Hazard Classifications【危险分类】 | Eye Irrit. 2 - Skin Irrit. 2 |
Storage Class Code【储存分类代码】 | 10 - Combustible liquids |
WGK | WGK 3 |