MABSol® Biotinylated Human IL-6, epitope tag free, primary amine labeling (IL6-H8218) is expressed from human HEK293 cells. It contains AA Val 30 - Met 212 (Accession # NP_000591). It is the biotinylated form of Human IL-6, premium grade (IL6-H4218).
Predicted N-terminus: Val 30
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The product does NOT contain any epitope tags. The protein has a calculated MW of 20.8 kDa. The protein migrates as 24-27 kDa on a SDS-PAGE gel under reducing (R) condition due to different glycosylation.
The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with biotins using standard chemical labeling method. A standard biotin reagent (13.5 angstroms) is used in this product.
Passed as determined by the HABA assay / binding ELISA.
Less than 1.0 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
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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:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Biotinylated Human IL-6, epitope tag free, primary amine labeling on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
Immobilized Human IL-6 R alpha, Fc Tag (Cat. No. ILR-H5259) at 5 μg/mL (100 μL/well) can bind Biotinylated Human IL-6, epitope tag free, primary amine labeling (Cat. No. IL6-H8218) with a linear range of 1-20 ng/mL (QC tested).
Loaded Biotinylated Human IL-6, epitope tag free, primary amine labeling (Cat. No. IL6-H8218) on SA Biosensor, can bind Human IL-6 R alpha, His Tag (Cat. No. ILR-H4223) with an affinity constant of 45.9 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
活性（Bioactivity）-Cell based assay
Biotinylated Human IL-6, epitope tag free, primary amine labeling (Cat. No. IL6-H8218) stimulates proliferation of TF-1 human erythroleukemic cell line. The EC50 for this effect is 0.2532-0.4489 ng/mL (Routinely tested).
Interleukin 6 (IL-6) is also known as HGF, BSF2,HSF, IFNB2 and IL-6, originally identified as a B cell differentiation factor, is a multifunctional cytokine that regulates immune responses, hematopoiesis, acute phase responses, and inflammatory reactions.It is secreted by T cells, macrophages , monocytes, fibroblasts,endothelial cells,et.al. to stimulate immune response to trauma, especially burns or other tissue damage leading to inflammation. Interleukin 6 has been shown to interact with interleukin-6 receptor and glycoprotein. IL-6 is relevant to many disease processes such as diabetes,atherosclerosis, depression,Alzheimer's Disease,systemic,lupus erythematosus,prostate cancer and rheumatoid arthritis. Advanced/metastatic cancer patients have higher levels of IL-6 in their blood.Hence there is an interest in developing anti-IL-6 agents as therapy against many of these diseases.