Active Recombinant Human Interleukin 18

• Cat.No.: IL18-433H
• Product Overview: Interleukin-18 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 157 amino acids and having a molecular mass of 18302 Dalton. The IL-18 is purified by proprietary chromatographic techniques.

Specification

• Species: Human
• Source: Human
• Tag: Non
• Description: IL-18 is a proinflammatory cytokine. This cytokine can induce the IFN-gamma production of T cells. The combination of this cytokine and IL12 has been shown to inhibit IL4 dependent IgE and IgG1 production, and enhance IgG2a production of B cells. IL-18 binding protein (IL18BP) can specifically interact with this cytokine, and thus negatively regulate its biological activity.
• Form: Lyophilized from a concentrated (1mg/ml) solution in water containing 0.5x PBS pH=7.3.
• Purity: Greater than 98.0% as determined by (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
• Bio-activity: The ED50 as determined by the dose-dependant stimulation of the IFN-g by human PBMC co-stimulated with IL-12 was found to be 5ng/ml corresponding to a Specific Activity of 200,000IU/mg.
• Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
• Solubility: It is recommended to reconstitute the lyophilized Interleukin 18 in sterile 18Mμ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
• Storage: Lyophilized Interleukin 18 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL18 should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.
• Pathways: African trypanosomiasis; Cellular roles of Anthrax toxin; Cytokine Signaling in Immune system; Cytokine-cytokine receptor interaction; Cytosolic DNA-sensing pathway; Hypertrophy Model; IL12 signaling mediated by STAT4; IL12-mediated signaling events; Immune System; Influenza A; Interleukin-1 processing; Malaria; NOD-like receptor signaling pathway; Rheumatoid arthritis; Signaling by Interleukins; Tuberculosis

Gene Information

• Gene Name: IL18 interleukin 18 (interferon-gamma-inducing factor) [ Homo sapiens ]
• Official Symbol: IL18
• Synonyms: Interferon-gamma-inducing factor; IGIF; IL-1g; IL-18; IL1F4; MGC12320; IFN-gamma-inducing factor; Interleukin-1 gamma; IL-1 gamma; Iboctadekin; IL18
• Gene ID: 3606
• mRNA Refseq: NM_001562
• Protein Refseq: NP_001553
• MIM: 600953
• UniProt ID: Q14116
• Chromosome Location: 11q22.2-q22.3
• Function: cytokine activity; signal transducer activity

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.