Fagus Antibody Services

Recombinant Mouse Interleukin-18/IL-18 Protein (His Tag)

£200.00£584.00 excluding VAT

Interleukin-18 (IL-18)is a protein which belongs to the IL-1 family. It is expressed as a 24 kDa precursor by endothelial and epithelial cells, keratinocytes, gamma δ T cells, and phagocytes. Mature mouse IL-18 shares 63% and 91% amino acid sequence identity with mouse and rat IL-18, respectively. IL-18 binds to the widely expressed IL-18 R alpha which recruits IL-18 R beta to form the signaling receptor complex. Its bioactivity is negatively regulated by interactions with IL-18 binding proteins and virally encoded IL-18BP homologs. It augments natural killer cell activity in spleen cells and stimulates interferon gamma production in T-helper type I cells. In the presence of IL-12 or IL-15, IL-18 enhances anti-viral Th1 immune responses by inducing IFN-gamma production and the cytolytic activity of CD8+ T cells and NK cells. In the absence of IL-12 or IL-15, however, IL-18 promotes production of the Th2 cytokines IL-4 and IL-13 by CD4+ T cells and basophils.


20µg, 100µg

Active Protein

Active protein


Measure by its ability to induce IFN gamma secretion in KG-1 cells. The ED50 for this effect is <0.5 μg/mL.

Protein Construction

Recombinant Mouse Interleukin-18 is produced by our E.coli expression system and the target gene encoding Asn36-Ser192 is expressed with a 6His tag at the N-terminus.



Fusion Tag






Expressed Host



This product is provided as lyophilized powder which is shipped with ice packs.


> 95 % as determined by reducing SDS-PAGE.


< 1.0 EU per μg as determined by the LAL method.

Stability and Storage

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.

Mol Mass

19.7 kDa

AP Mol Mass

18 kDa


Lyophilized from a 0.2 μm filtered solution of 20mM Tris-HCl, 1mM EDTA, 2mM DTT, 5% Trehalose, pH8.0.

Research Areas

Please refer to the printed manual for detailed information.

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