Bpsbioscience/Human Interleukin-4/90193-B/10 µg
商品编号：
90193-B
品牌：
bpsbioscience
市场价：
¥4100.00
美元价：
2460.00
联系Q Q：
3392242852
电话号码：
4000-520-616
电子邮箱：
info@ebiomall.com
商品介绍
Species: Human
Host Species: E. coli
MW: 15 kDa
Genbank #: P05112
a.a: 25–153
Background:
Interleukin-4 is produced mainly by a subpopulation of activated T-cells (Th2) that are the biologically most active helper cells for B-cells and that also secrete IL-5 and IL-6. The biological activities of IL-4 are mediated by a specific receptor. The extracellular domain of the IL-4 receptor is related to the receptors for EPO, IL-6, and the beta chain of the IL2 receptor (CD124). Two types of IL-4 receptor (IL-4R) exist: the type 1 receptor is a heterodimer consisting of CD132 and IL-4R-alpha. The type 2 receptor is a heterodimer consisting of IL-4Ralpha and IL-13Ralpha1. IL-4 enhances expression of MHC class 2 antigens on B-cells. It can promote their capacity to respond to other B-cell stimuli and to present antigens for T-cells. Pretreatment of macrophages with IL-4 prevents the production of IL1, TNF-alpha and prostaglandins in response to activation of the cells by bacterial endotoxins or IFN-gamma. IL-4 synergises with EPO and G-CSF in the generation of colonies containing granulocytes or erythroid progenitor cells in a colony formation assay.
Description:
Recombinant human Interleukin-4 is a disulfide-linked monomer protein consisting of 130 amino acid residues, migrates as an approximately 15 kDa protein under non-reducing and reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human Interleukin-4 mature chain was expressed in E. coli.
UniProt
P05112
Synonym(s):
IL-4, interleukin 4, BCGF1, B cell Growth Factor-1, IL4
Purity:
≥95% by SDS-PAGE and HPLC
Endotoxin Level:
<0.1 ng/µg (1 EU/µg), using the LAL gel clot method.
Biological Activity:
The ED50 was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is ≤ 0.1 ng/ml, corresponding to a specific activity of > 1x 107 units/mg.
Formulation:
Lyophilized from a 0.2 µm filtered solution of 2.5% glycine, 0.5% sucrose, 0.01% Tween-80, 5 mM glutamic acid, pH 4.5.
Format:
lyophilized protein
Reconstitution:
Reconstitute at 0.1-1.0 mg/ml in distilled water. This solution can then be diluted into other buffers. To maximize product collection from vial surface, vortex briefly and then spin down to recollect the liquid.
Storage / Stability:
The lyophilized protein is stable for at least 2 years from date of receipt when stored at -20°C. Upon reconstitution, store in working aliquots at +4°C for up to one month, or at -20°C for up to six months, in the presence of a carrier protein. Avoid repeated freeze/thaw cycles.
Reference(s):
1. Tachdjian R, et al. J. Exp. Med., Sep 2009, 206: 2191 - 2204.
2. Yu, M., et al. J Biol Chem. 2009 Nov 20,284(47):32968-79. .
3. Ennaciri J, Girard D. J Immunol. 2009 Oct 15,183(8):5261-9
2. Yu, M., et al. J Biol Chem. 2009 Nov 20,284(47):32968-79. .
3. Ennaciri J, Girard D. J Immunol. 2009 Oct 15,183(8):5261-9
Warning(s):
Avoid freeze/thaw cycles
Amino Acid Sequence:
HKCDITLQEIIKTLNSLTEQKTLCTELTVTDIFAASKNTTEKETFCRAATVLRQFYSHHEKDTRCLGATAQQFHRHKQLIRFLKRLDRNLWGLAGLNSCPVKEANQSTLENFLERLKTIMREKYSKCSS
Scientific Category:
Cytokine/Growth Factors
Product Type:
Recombinant Protein
Data shown is lot-specific. Contact us for specific information on other lots.
品牌介绍
bpsbioscience简介：为生命科学研究提供ELISA试剂盒（仅供科研）、抗体和抗原（仅供科研）、流式抗体，使您的检测结果更稳定可靠，用心服务科研。我公司国内总代理,华东地区代理bpsbioscience 专业经营进口胎牛血清、细胞因子、ELISA试剂盒、细胞、抗体、生物试剂、耗材、培养基、一抗、二抗、其产品吸附均匀，吸附性好，空白值低，孔底透明度高，代做ELISA实验等。
