Active Recombinant Human IL1B Protein (153 aa)

• Cat.No.: IL1B-101I
• Product Overview: Recombinant Human IL1B Protein without tag was expressed in E. coli.

Specification

• 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.
• Source: E. coli
• Species: Human
• Form: Sterile Filtered White lyophilized (freeze-dried) powder.
• Bio-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 × 10^9 IU/mg.
• Molecular Mass: Approximately 17.3 kDa, a single non-glycosylated polypeptide chain containing 153 amino acids.
• Protein Length: 153
• AA Sequence: APVRSLNCTLRDSQQKSLVMSGPYE LKALHLQGQDMEQQVVFSMSFVQGE ESNDKIPVALGLKEKNLYLSCVLKD DKPTLQLESVDPKNYPKKKMEKRFV FNKIEINNKLEFESAQFPNWYISTS QAENMPVFLGGTKGGQDITDFTMQF VSS
• Endotoxin: Less than 1 EU/μg of rHuIL-1β as determined by LAL method.
• Purity: >97% by SDS-PAGE and HPLC analyses.
• Storage: This lyophilized preparation is stable at 2-8 centigrade, but should be kept at -20 centigrade for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 centigrade. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 to -70 centigrade. Avoid repeated freeze/thaw cycles.
• Storage Buffer: Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.5.
• 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C. Further dilutions should be made in appropriate buffered solutions.

Gene Information

• Gene Name: IL1B interleukin 1, beta [ Homo sapiens ]
• Official Symbol: IL1B
• Synonyms: IL1B; interleukin 1, beta; interleukin-1 beta; IL 1B; IL1 BETA; IL1F2; IL-1 beta; catabolin; preinterleukin 1 beta; pro-interleukin-1-beta; IL-1; IL1-BETA
• Gene ID: 3553
• mRNA Refseq: NM_000576
• Protein Refseq: NP_000567
• MIM: 147720
• UniProt ID: P01584