| Description : |
Interleukin-1beta (IL-1β) is a non-secreted proinflammatory cytokine produced mainly by activated macrophages, as well as neutrophils, epithelial cells, and endothelial cells. It possesses metabolic, physiological, haematopoietic activities, and plays one of the central roles in the regulation of the immune responses. Both IL-1α and IL-1β 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. The mature Rhesus macaque IL1β shares 96% amino acid sequence identity with rhesus and 67% -78% with canine, mouse and rat IL1β. |
| Source : |
E.coli |
| Species : |
Rhesus |
| Form : |
Lyophilized from a 0.2μm filtered concentrated solution in PBS, pH 7.4. |
| Bio-activity : |
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10.G4.1 cells is less than 10 pg/ml, corresponding to a specific activity of > 1.0 × 10⁸ IU/mg. |
| Molecular Mass : |
Approximately 17.3 kDa, a single non-glycosylated polypeptide chain containing 153 amino acids. |
| Protein length : |
153 |
| AA Sequence : |
APVRSLHCTLRDAQLKSLVMSGPYE LKALHLQGQDLEQQVVFSMSFVQGE ESNDKIPVALGLKAKNLYLSCVLKD DKPTLQLESVDPKNYPKKKMEKRFV FNKIEINNKLEFESAQFPNWYISTS QAENMPVFLGGTRGGQDITDFTMQF VSS |
| Endotoxin : |
Less than 1 EU/µg of rRhIL-1β as determined by LAL method. |
| Purity : |
>98% by SDS-PAGE and HPLC analysis. |
| Storage : |
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 centigrade as supplied. 1 month, 2 to 8 centigrade under sterile conditions after reconstitution. 3 months, -20 to -70 centigrade under sterile conditions after reconstitution. |
| Reconstitution : |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤-20 centigrade. Further dilutions should be made in appropriate buffered solutions. |
