Name: Human IL1F5/IL36RN Recombinant Protein

Synonyms: Interleukin-36 Receptor Antagonist Protein;FIL1 Delta;IL-1-Related Protein 3;IL-1RP3;Interleukin-1 HY1;IL-1HY1;Interleukin-1 Delta;IL-1 Delta;Interleukin-1 Family Member 5;IL-1F5;Interleukin-1 Receptor Antagonist Homolog 1;IL-1ra Homolog 1;Interleukin-1-Like Protein 1;IL-1L1;IL36RN;FIL1D;IL1F5;IL1HY1;IL1L1;IL1RP3

Expression host: E.coli

Sequence: Met 1-Asp155

Accesstion: Q9UBH0

Species: Human

Mol_Mass: 17.8 kDa

AP_Mol_Mass: 17 kDa

Tag: C-His

Purity: > 98 % as determined by reducing SDS-PAGE.


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

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

Formulation: Lyophilized from sterile PBS, pH 7.4.Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.Please refer to the specific buffer information in the printed manual.

Reconstitution: Please refer to the printed manual for detailed information.

Background: Interleukin-1 family member 5 (IL-1F5); also known as interleukin 36 receptor antagonist (IL36RA); is a member of the interleukin 1 cytokine family. This cytokine was shown to specifically inhibit the activation of NF-kappaB induced by interleukin 1 family; member 6 (IL1F6). IL-1F5 is a highly and a specific antagonist of the IL-1 receptor-related protein 2-mediated response to interleukin 1 family member 9 (IL1F9). IL-1F5 could constitute part of an independent signaling system analogous to interleukin-1 alpha (IL-1A); beta (IL-1B) receptor agonist and interleukin-1 receptor type I (IL-1R1); which is present in epithelial barriers and takes part in local inflammatory response. It has been proved that IL-1F5 induces IL-4 mRNA and protein expression in glia in vitro and enhances hippocampal expression of IL-4 following intracerebroventricular injection. The inhibitory effect of IL-1F5 on LPS-induced IL-1β is attenuated in cells from IL-4-defective mice. Experiment results suggest that IL-1F5 mediates anti-inflammatory effects through its ability to induce IL-4 production and that this is a consequence of its interaction with the orphan receptor; single Ig IL-1R-related molecule (SIGIRR)/TIR8; as the effects were not observed in SIGIRR−/− mice. In contrast to its effects in brain tissue; IL-1F5 did not attenuate LPS-induced changes; or up-regulated IL-4 in macrophages or dendritic cells; suggesting that the effect is confined to the brain.

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