Stable for 1 year at -4032°C or below from date of shipment.
保质期:
1-2年
供应商:
安诺伦(北京)生物科技有限公司
规格:
100 ug
蛋白长度:A DNA sequence encoding the cynomolgus IGFBP4 (Met1-Glu258) was expressed with a polyhistidine tag at the C-terminus.
性质:
表达系统:HEK293 Cells
种属:Cynomolgus
氨基酸序:Met1-Glu258
标签类型:C-His
分子量:The recombinant heterodimer of cynomolgus IGFBP4 comprises 248 amino acids and has a calculated molecular mass of 27.4 KDa. The apparent molecular mass of the protein is approximately 33-36 KDa respectively in SDS-PAGE.
活性:Measured by its ability to inhibit the biological activity of IGFII on MCF7 human breast adenocarcinoma cells (Karey, K.P. et al. (1988) Cancer Research 48:4083.).The EDfor this effect is typically 0.04-0.2 μg/mL in the presence of 14 ng/mL human IGFII.
内毒素:< 1.0 EU per μg of the protein as determined by the LAL method.
基因名称:insulin-like growth factor binding protein 4
通用名:IGFBP4
蛋白序参考:
总结:Insulin-like growth factor-binding protein 4 (IGFBP-4) is a 24-kDa protein that binds insulin-like growth factor 1 (IGF-1) and IGF-2 with high affinity and inhibits IGF action in vitro. The Insulin-like growth factor-binding protein also known as IGFBP serves as a carrier protein for Insulin-like growth factor 1. IGFBPs are distinct but are sharing regions with strong homology. All members of the IGFBP family bind IGF-I and IGF-II with about equal affinity. Insulin-like growth factor (IGF) binding proteins (IGFBPs) have been shown to either inhibit or enhance the action of IGF or act in an IGF-independent manner in the prostate. IGF-binding protein-4 (IGFBP-4) inhibits IGF-I action in vitro and is the most abundant IGFBP in the rodent arterial wall. Expression of IGFBP-4 mRNA in nontransgenic littermates was maximal in the liver and kidney. IGFBP-4 is a functional antagonist of IGF-I action on SMC. There is mounting evidence that the structure of the IGFBP proteins plays a key role in the regulation of IGF bioavailability, by modulating its molecular size, capillary membrane permeability, target tissue specificity, cell membrane adherence, and IGF affinity.
形式:Lyophilized
纯度:> 80 % as determined by SDS-PAGE.
储存条件:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.
储存溶液:Lyophilized from sterile PBS, pH 7.4.Please contact us for any concerns or special requirements.Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization.Please refer to the specific buffer information in the hard copy of CoA.