Product name | Recombinant Human IL-1 beta Protein |
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Catalog No. | RP00002 |
Description | Recombinant Human IL-1 beta Protein is produced by E. coli expression system. The target protein is expressed with sequence (Ala117-Ser269) of human IL-1 beta (Accession #NP_000567.1) fused with an initial Met at the N-terminus and a 6×His tag at the C-terminus. |
Bio-Activity |
1.Recombinant Human IL1β protein was measured by NF-κB reporter assay in HEK293 cells. The ED50 for this effect is 1-10 pg/mL, corresponding to a specific activity of 1×108~1×109 units/mg. 2.Measured in a cell proliferation assay using D10.G4.1 mouse helper T cells. The ED50 for this effect is 0.217-0.870 ng/mL, corresponding to a specific activity of 1.15×106~4.61×106 units/mg. 3.Measured by its binding ability in a functional ELISA. Immobilized Human IL-1 beta (Catalog: RP00002) at 10 μg/mL (100 μL/well) can bind Biotinylated Human IL-1R1 (Catalog: RP01036) with a linear range of 0.002-1 μg/mL. |
Purity | > 95% by SDS-PAGE. |
Endotoxin | < 0.1 EU/μg of the protein by LAL method. |
Formulation | Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation. |
Species | Human |
Storage | Store the lyophilized protein at -20°C to -80 °C for long term. After reconstitution, the protein solution is stable at -20 °C for 3 months, at 2-8 °C for up to 1 week. |
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Reconstitution | Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid votex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles. |
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* For research use only. Not for therapeutic or diagnostic purposes.