Cat#:RP-1570HAT;Product Name:Recombinant Human Interleukin- 4 Protein;Description:Recombinant Interleukin-4 protein, fused with His tag at N Terminus, was produced in E.coli and was purified using the chromatography techniques, after refolding of the isolated inclusion bodies in a renaturation buffer.;Source:E.coli;AA Sequence:25-153aa;Molecular Characterization:17.2kDa;Purity:Greater than 95% by SDS-PAGE;Endotoxin:< 1.0 EU per ug of protein as determined by LAL method.;Bioactivity:The ED50 for this effect is less or equal to 0.5 ng/ml. Measured in a cell proliferation assay using TF1 human erythroleukemic cells.;Formulation:Liquid Solution;Stability:Recombinant Human Interleukin- 4 Protein was stable up to 1 year from date of receipt at -70℃;Concentration:0.5mg/mL;Storage Buffer:Recombinant Human Interleukin- 4 protein was supplied in 20mM Tris-HCl buffer (pH 8.0) containing 10% glycerol.;Storage:Recombinant Human Interleukin- 4 Protein can be stored at +4℃for 1-2 weeks. It is recommended that the recombinant protein be aliquoted for optimal storage at -20 or -70℃. Please avoid repeated freeze-thaw cycles.;Usage:For Lab Research Use Only;