Optimal preservation of protein structure, post-translational modifications and functions.
产品特性
Recombinant human CD124 / IL4R (transcript variant 1) protein expressed in HEK293 cells.
Produced with end-sequenced ORF clone
Tested for bioactivity.
内毒素水平
Endotoxin level is <0.1 ng/μg of protein (<1EU/μg).
Biological Activity Comment
ED50 was determined by its ability to inhibit the IL-4 dependent proliferation of human TF-1 cells is less than or equal to 5.0 ng/ml (in the presence of 0.5 ng/ml of IL-4), corresponding to a specific activity of > 2 x 10^5 units/mg.
IL4R
宿主: 小鼠
宿主: 人细胞
Recombinant
> 90 % as determined by reducing SDS-PAGE.
应用备注
Recombinant human proteins can be used for: Native antigens for optimized antibody production Positive controls in ELISA and other antibody assays Protein-protein interaction In vitro biochemical assays and cell-based functional assays
限制
仅限研究用
缓冲液
Lyophilized from a 0.2 μM filtered solution of 20 mM phosphate buffer,100 mM NaCl, pH 7.2
注意事项
Resuspend the protein in the desired concentration in proper buffer
储存条件
-80 °C
储存方法
Store at -80°C. Thaw on ice, aliquot to individual single-use tubes, and then re-freeze immediately. Only 2-3 freeze thaw cycles are recommended.
This gene encodes the alpha chain of the interleukin-4 receptor, a type I transmembrane protein that can bind interleukin 4 and interleukin 13 to regulate IgE production. The encoded protein also can bind interleukin 4 to promote differentiation of Th2 cells. A soluble form of the encoded protein can be produced by proteolysis of the membrane-bound protein, and this soluble form can inhibit IL4-mediated cell proliferation and IL5 upregulation by T-cells. Allelic variations in this gene have been associated with atopy, a condition that can manifest itself as allergic rhinitis, sinusitus, asthma, or eczema. Polymorphisms in this gene are also associated with resistance to human immunodeficiency virus type-1 infection. Alternate splicing results in multiple transcript variants.