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Recombinant Canine IL-4
In stock
Catalog ID
400-09
Details
Interleukin 4 (IL-4) is an immunomodulatory cytokine that functions to induce naïve helper T cells to differentiate into type 2 T helper (Th2) cells. Th2 cells subsequently produce more IL-4 in a positive feedback loop. IL-4 also promotes immunoglobulin IgG to IgE isotype switching on B cells. IL-4 binds the IL-4Rα receptor to activate STAT6 signaling.
Product images on the website are not representative of actual product, including, but not limited to differences in cap color, tube type, or label format.
Instructions
Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80‚°C and avoid repeat freeze thaws.
Technical Specifications
| Alternate Names | B-cell stimulatory factor-1, BSF-1, BCDF, BCGF |
| Accession Number | O77762 |
| Source | Genetically modified E.coli |
| Predicted Molecular Mass | Monomer, 12.9 kDa (109 aa) |
| AA Sequence | MHNFNITIKE IIKMLNILTA RNDSCMELTV KDVFTAPKNT SDKEIFCRAA TVLRQIYTHN CSNRYLRGLY RNLSSMANKT CSMNEIKKST LKDFLERLKV IMQKKYYRH |
| Formulation | Lyophilized from a 0.2 µm filtered solution containing 0.1% Trifluoroacetic Acid (TFA) |
| Product Reconstitution | Sterile water at 0.1 mg/mL |
| Country of Origin | USA |
| Specification* | Method of Determination | Acceptance Criteria |
| Purity | Reducing and Non-Reducing SDS PAGE | ≥ 95% |
| Endotoxin | Kinetic LAL (50% confidence) | ≤ 0.1 EU/µg |
| Biological Activity (ED50) | TF-1 cell proliferation | ≤ 25 ng/mL |
*Lot-specific values for the above specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.
Specifications
Storage
At or below -20°C
Shelf Life
12 months from date of receipt when stored at -20‚°C to -80‚°C as supplied.
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