Active Recombinant Human IL18 protein, His-tagged

Cat.No. : IL18-2296H
Product Overview : Active Recombinant Human IL18 protein(Q14116)(37~193 aa), fused with N-terminal His tag, was expressed in E.coli.
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Species : Human
Source : E.coli
Tag : His
Protein Length : 37-193 aa
Form : Lyophilized from sterile 20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 0.01% SKL, 5% Trehalose and Proclin300.
Bio-activity : Interleukin-18 (IL18, also known as interferon-gamma inducing factor) is a proinflammatory cytokine that belongs to the IL-1 superfamily and is produced by macrophages and other cells. IL18 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). Besides, Caspase 1 (CASP1) has been identified as an interactor of IL18, thus a binding ELISA assay was conducted to detect the interaction of recombinant human IL18 and recombinant human CASP1. Briefly, IL18 were diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100uL were then transferred to CASP1-coated microtiter wells and incubated for 2h at 37°C. Wells were washed with PBST and incubated for 1h with anti-IL18 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37°C. Finally, add 50µL stop solution to the wells and read at 450nm immediately. The binding activity of IL18 and CASP1 was shown, and this effect was in a dose dependent manner.
Molecular Mass : 19.5kDa
Endotoxin : <1.0EU per 1μg (determined by the LAL method).
Purity : > 90% as determined by SDS-PAGE.
Storage : Avoid repeated freeze/thaw cycles. Store at -20°C for 12 months. Aliquot and store at -80°C for 12 months.
Reconstitution : Reconstitute in 20mM Tris, 150mM NaCl (PH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.
Gene Name IL18 interleukin 18 (interferon-gamma-inducing factor) [ Homo sapiens ]
Official Symbol IL18
Synonyms IL18; interleukin 18 (interferon-gamma-inducing factor); interleukin-18; IGIF; IL 1g; IL 18; IL1F4; IL-1 gamma; iboctadekin; interleukin-1 gamma; IFN-gamma-inducing factor; IL-18; IL-1g; MGC12320;
Gene ID 3606
mRNA Refseq NM_001243211
Protein Refseq NP_001230140
MIM 600953
UniProt ID Q14116

Not For Human Consumption!

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What are the difference between IL18-01HG, IL18-153HG and IL18-500H. (sequence, biological activity, QC, or what do you propose to buy) 04/26/2023

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.

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