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Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag is produced by co-expression of IL-12B and IL-12A, has a calculated MW of 36.6 kDa (IL-12B) and 23.8 kDa (IL-12A). Subunit IL-12B is fused with polyhistidine tag at the C-terminus and subunit IL-12A is fused with flag tag at the C-terminus. The reducing (R) heterodimer protein migrates as 45 kDa (IL12B) and 38-43 kDa (IL12A) respectively due to glyosylation.
>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-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.
Immobilized Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) at 0.5 μg/mL (100 μL/well) can bind Anti-IL23A & IL12B MAb (P40 domain) with a linear range of 0.2-2 ng/mL (QC tested).
Immobilized Biotinylated Human IL-12 R beta 1, Fc,Avitag (Cat. No. ILB-H82F7) at 1 μg/mL (100 μL/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate, can bind Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) with a linear range of 0.039-0.625 μg/mL (Routinely tested).
Human IL-12 R beta 1, Fc Tag (Cat. No. ILB-H5255) captured on CM5 chip via Anti-human IgG Fc antibodies surface can bind Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) with an affinity constant of 2.06 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Loaded Anti-IL23A & IL12B MAb (P40 domain) on Protein A Biosensor, can bind Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) with an affinity constant of 1.07 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Loaded Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) on HIS1K Biosensor, can bind Human IL-12 R beta 1, Fc Tag (Cat. No. ILB-H5255) with an affinity constant of 92.2 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Human IL-12B&IL-12A Heterodimer Protein, His Tag&Flag Tag (Cat. No. IL2-H4210) stimulates the proliferation of PHA-P activated PBMC. The ED50 for this effect is 0.05 ng/mL (Routinely tested).
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