||Recombinant fragment, corresponding to the signal peptide and extracellular amino acids 1-232 of Human IL4R fused to the Fc region of human IgG1. The chimeric protein was expressed in modified human 293 cells.
||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 an alternate splice variant or 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. Two transcript variants encoding different isoforms, a membrane-bound and a soluble form, have been found for this gene.
||The ED50 of IL4R - Fc Chimera is typically 45-60 ng/ml as measured by its ability to neutralize IL-4 mediated proliferation of the human growth factor dependent TF-1 cell line.
||Lyophilised:It is recommended that 0.5 ml of sterile phosphate-buffered saline be added to the vial.
||>95% by SDS-PAGE
||Preservative: NoneConstituents: 10% Trehalose, 1% Human serum albumin, PBS
||Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
|Sequences of amino acids:
||Theoretical Sequence:MKVLQEPTCVSDYMSISTCEWKMNGPTNC STELRLLYQLVFLLSEAHTCIPEN NGGAGCVCHLLMDDVVSADNYTLDLWAGQQLLWKGSFKPS EHVKPRAPGNL TVHTNVSDTLLLTWSNPYPPDNYLYNHLTYAVNIWSENDP ADFRIYNVTYLEP SLRIAASTLKSGISYRARVRAWAQCYNTTWSEWSPSTKWH NSYREPFEQHG SSNTKVDKKVEPKSCDKTHTCPPCPAPELLGGPSVFLFPP KPKDTLMISRTPE VTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNS TYRVVSVLTVLH QDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYT LPPSRDELTKNQV SLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGS FFLYSKLTVDKSR WQQGNVFSCSVMHEALHNHYTQKSLSLSPGK