| Species |
Human |
| Protein Construction |
IL-1β (Ala117-Ser269)
Accession # P01584 |
|
| Purity |
> 95% as analyzed by SDS-PAGE
> 95% as analyzed by HPLC |
| Endotoxin Level |
< 0.2 EU/μg of protein by gel clotting method |
| Biological Activity |
ED50 < 10.0 pg/ml, measured by the dose-dependent stimulation of mouse D10.G4.1 helper T cells, corresponding to a specific activity of 1.0 × 108 IU/mg. |
| Expression System |
E. coli |
| Apparent Molecular Weight |
~17.3 kDa, on SDS-PAGE under reducing conditions. |
| Formulation |
Lyophilized after extensive dialysis against PBS. |
| Reconstitution |
It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder in ddH₂O or PBS up to 100 μg/ml. |
| Storage & Stability |
Upon receiving, this product remains stable for up to 6 months at lower than -70°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. For long term storage it is recommended that a carrier protein (example 0.1% BSA) be added. Avoid repeated freeze-thaw cycles. |
Lane 1: 2 μg of IL-1β, Human, reducing (R)
Lane 2: 2 μg of IL-1β, Human, non-reducing (NR)
> 95% as analyzed by SDS-PAGE
| Target Background |
Interleukin-1 beta (rhIL-1β) is a proinflammatory cytokine produced in a variety of cells including monocytes, tissue macrophages, keratinocytes and other epithelial cells. Both IL-1 alpha and IL-1 beta binds to the same receptor and has similar if not identical biological properties. These cytokines have a broad range of activities including, stimulation of thymocyte proliferation, by inducing IL-2 release, B-cell maturation and proliferation, mitogenic FGF-like activity and the ability to stimulate the release of prostaglandin and collagenase from synovial cells. However, whereas IL-1 beta is a secreted cytokine, IL-1 alpha is predominantly a cell-associated cytokine. |
| Synonyms |
IL1B; IL-1; IL1-BETA; IL1F2; interleukin 1 beta; IL1beta |
For laboratory research use only. Direct human use, including taking orally and injection and clinical use are forbidden.
