重组人 IGFBP3 / IBP3 蛋白 (His标签)

重组人 IGFBP3 / IBP3 蛋白 (His标签)（产品说明）
蛋白名称：Human IGFBP3 / IBP3 Protein (His Tag)
蛋白构建：A DNA sequence encoding the mature form of human IGFBP3 (NP_000589.2) (Gly28-Lys291) was fused with a polyhistidine tag at the N-terminus.
表达宿主：HEK293 Cells
蛋白纯度：> 85 % as determined by SDS-PAGE
蛋白活性：1. Measured by its binding ability in a functional ELISA. Immobilized human IGF2 (Cat:13032-H24E) at 10 μg/mL (100 μl/well) can bind biotinylated Human His-IGFBP3, The EC50 of biotinylated Human His-IGFBP3 is 18 ng/mL. 2. Measured by its binding ability in a functional ELISA. Immobilized human IGF1 (Cat:10598-H24E) at 10 μg/mL (100 μl/well) can bind biotinylated Human His-IGFBP3, The EC50 of biotinylated Human His-IGFBP3 is 24 ng/mL. 3. Measured by its ability to inhibit the biological activity of IGFI or IGFII on MCF7 human breast adenocarcinoma cells (Karey, K.P. et al. (1988) Cancer Research 48:4083.). The ED50 for this effect is typically 0.05-0.2 μg/mL in the presence of 14 ng/mL human IGFII.
蛋白内毒素：< 1.0 EU per μg of the protein as determined by the LAL method
预测N端：His
蛋白分子量：The secreted recombinant human IGFBP3 comprises 280 amino acids with a predicted molecular mass of 31 kDa. As a result of glycosylation, the apparent molecular mass of rhIGFBP3 is approximately 40-45 kDa in SDS-PAGE under reducing conditions.
蛋白NP号：NP_000589.2
蛋白氨基酸序列：Gly28-Lys291
蛋白标签：N-His
蛋白保存条件：Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.