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IL-7 human

品牌
Sigma-Aldrich
货号
SRP3266
规格纯度
Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC)
参考价格
5079.35 *本价格含增值税费
促销
数量
-+
产品介绍:

产品说明

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.

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.

外形

Lyophilized from 10 mM Acetic Acid.

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℃.

基本信息

NACRESNA.32

产品性质

生物来源human
重组expressed in E. coli
测定≥98% (HPLC)
≥98% (SDS-PAGE)
形式lyophilized
效能≤0.5 ng/mL ED50
分子量 17.4 kDa
包装pkg of 10 μg
杂质<0.1 EU/μg endotoxin, tested
颜色 white to off-white
UniProt登记号P13232
运输wet ice
储存温度−20℃
Gene Informationhuman ... IL7(3574)

安全信息

象形图GHS07
警示用语:Warning
危险声明H315 - H319
预防措施声明P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313
危险分类Eye Irrit. 2 - Skin Irrit. 2
储存分类代码10 - Combustible liquids
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable

Sigma-Aldrich

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