Active Recombinant Mouse Il18 Protein, His-Tagged

• Cat.No.: Il18-01M
• Product Overview: Recombinant mouse Il18 Protein, His-tagged was expressed in E. coli cell

Specification

• Species: Mouse
• Source: E.coli
• Tag: His
• Description: Interleukin-18 (L-18) is a cytokine that belongs to the IL-1 superfamily and is produced by macrophages and other cells. IL-18 works by binding to the interleukin-18 receptor, and together with IL-12 it induces cell-mediated immunity following infection with microbial products like lipopolysaccharide (LPS). After stimulation with IL-18, natural killer (NK) cells and certain T cells release another important cytokine called interferon-γ (IFN-γ) or type II interferon that plays an important role in activating the macrophages or other cells. The combination of this cytokine and IL12 has been shown to inhibit IL-4 dependent IgE and IgG1 production, and enhance IgG2a production in B cells. IL-18 binding protein (IL18BP) can specifically interact with this cytokine, and thus negatively regulate its biological activity.
• Form: Lyophilized powder
• AA Sequence: MNFGRLHCTTAVIRNINDQVLFVDKRQPVFEDMTDIDQSASEPQTRLIIYMYKDSEVRGLAVTLSVKDSKMSTLSCKNKIISFEEMDPPENIDD
  IQSDLIFFQKRVPGHNKMEFESSLYEGHFLACQKEDDAFKLILKKKDENGDKSVMFTLTNLHQS with polyhistidine tag at the C-terminus
• Endotoxin: <0.1 EU per 1 μg of the protein by the LAL method.
• Bio-activity: Measure by its ability to induce IFN gamma secretion in KG-1 cells. The ED50 for this effect is <0.5 μg/mL.
• Purity: >98% as determined by SDS-PAGE. Ni-NTA chromatography
• Storage Buffer: The protein was lyophilized from a solution containing 1X PBS, pH 8.0.
• Reconstitution: It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.
• Storage: Lyophilized protein should be stored at -20°C. Upon reconstitution, protein aliquots should be stored at -20°C or -80°C.
• Notes: Please use within one month after protein reconstitution.

Gene Information

• Gene Name: Il18 interleukin 18 [ Mus musculus (house mouse) ]
• Official Symbol: Il18
• Synonyms: IGIF; IL-18; IL-1g; IL1F4
• Gene ID: 16173
• mRNA Refseq: NM_001357221.1
• Protein Refseq: NP_001344150.1
• UniProt ID: P70380

Q&As

What are the difference between IL18-01HG, IL18-153HG and IL18-500H. (sequence, biological activity, QC, or what do you propose to buy)

IL18-01HG: Sequence: a.a.37-193 Endotoxin: <20 EU/mg Bio-activity: >5.0 x 10^4 IU/mg QC: Activity test, SDS-PAGE, LAL, SEC-HPLC IL18-153HG: Protein length: Tyr37-Asp193 AA Sequence: YFGKLESKLS VIRNLNDQVL FIDQGNRPLF EDMTDSDCRD NAPRTIFIISMYKDSQPRGM AVTISVKCEK ISTLSCENKI ISFKEMNPPD NIKDTKSDIIFFQRSVPGHD NKMQFESSSY EGYFLACEKE RDLFKLILKK EDELGDRSIMFTVQNEDVD Bio-activity: 1.0*10^6IU Measured by its ability to induce IFN-gamma secretion by KG‐1 human acute myelogenous leukemia cells in the presence of TNF-alpha. QC: Activity test, SDS-PAGE, LAL IL18-500H Recombinant Human IL18 will be custom produced upon order. All the sequence, purity, activity, and QC procedures will be optional and decided by our customer.