This protein carries no "tag"
The protein has a calculated MW of 15.0 kDa. The protein migrates as 15 kDa and 19 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
Human IL-4, premium grade on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
Human IL-4, premium grade (Cat. No. IL4-H4218) situmulates proliferation of TF-1 cells. The specific activity of Human IL-4, premium grade (Cat. No. IL4-H4218) is > 1.0ⅹ10^7 IU/mg, which is calibrated against human IL4 WHO International Stand (NIBSC code: 88/656) (QC tested).
Human IL-4, premium grade (Cat. No. IL4-H4218) stimulates the proliferation of TF-1 human erythroleukemic cells. The ED50 for this effect is 0.27-0.49 ng/mL (Routinely tested).
Immobilized Human IL-4, premium grade (Cat. No. IL4-H4218) at 5 μg/mL (100 μL/well) can bind Biotinylated Human IL-4 R alpha, Avitag,His Tag (Cat. No. ILR-H82E9) with a linear range of 2-78 ng/mL (QC tested).
Immobilized Human IL-4, premium grade (Cat. No. IL4-H4218) at 5 μg/mL (100 μL/well)can bind Human IL-4 R alpha, Fc Tag (Cat. No. ILR-H5253) with a linear range of 1-20 ng/mL (Routinely tested).
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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