Recombinant Human Interleukin-1 beta (rHu IL-1β)

SKU: orb1495048

Description

IL-1 beta 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.

Images & Validation

• Application Notes:
  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°C. Further dilutions should be made in appropriate buffered solutions.

Key Properties

• Source: Escherichia coli
• Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of murine D10S cells is less than 1.0 pg/ml, corresponding to a Specific Activity of ＞1.0 x 109 IU/mg.
• Molecular Weight: Approximately 17.3 kDa, a single non-glycosylated polypeptide chain containing 153 amino acids.
• Protein Sequence: APVRSLNCTL RDSQQKSLVM SGPYELKALH LQGQDMEQQV VFSMSFVQGE ESNDKIP VAL GLKEKNLYLS CVLKDDKPTL QLESVDPKNY PKKKMEKRFV FNKIEINNKL EFESAQ FPNW YISTSQAENM PVFLGGTKGG QDITDFTMQF VSS
• Purification: >97% by SDS-PAGE and HPLC analyses.
• Purity: >97% by SDS-PAGE and HPLC analyses.
• Endotoxins: Less than 1EU/g of rHuIL-1β as determined by LAL method.

Storage & Handling

• Storage: This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
• Form/Appearance: Lyophilized from a 0.2m filtered concentrated solution in PBS, pH 7.5.
• Buffer/Preservatives: Lyophilized from a 0.2m filtered concentrated solution in PBS, pH 7.5.
• Disclaimer: For research use only