Single Ig IL-1-related receptor (SIGIRR) or TIR8 is a member of Toll-like receptor-interleukin 1 receptor signaling (TLR-IL-1R) receptor superfamily. Although SIGIRR/TIR8 shows the typical conserved motifs that characterize the IL-1R and Toll superfamily; it is structurally and functionally distinct from both. SIGIRR/TIR8 has only one Ig domain in its extracellular portion whereas the IL-1R family contains three Ig folds. An unusually long cytoplasmic domain is reminiscent of the structure of drosophila Toll; yet the SIGIRR peptide sequence is more closely related to IL-1RI. SIGIRR/TIR8 was mainly expressed in mouse and human epithelial tissues such as kidney; lung and gut. Resting and activated T and B lymphocytes and monocytes-macrophages expressed little or no SIGIRR/TIR8; with the exception of the mouse GG2EE macrophage line. Inflammation is enhanced in SIGIRR-deficient mice. SIGIRR negatively modulates immune responses. Inflammation is enhanced in SIGIRR-deficient mice; as shown by their enhanced chemokine induction after IL-1 injection and reduced threshold for lethal endotoxin challenge.
Recombinant Human SIGIRR/TIR8 Protein (His Tag)
£644.00 – £5,237.00 excluding VAT
| Size | 100µg, 1mg |
|---|---|
| Active Protein | |
| Activity | |
| Protein Construction | A DNA sequence encoding the human SIGIRR (Q6IA17-1) extracellular domain (Met 1-His 118) was expressed; fused with a polyhistidine tag at the C-terminus and a signal peptide at the N-terminus. |
| Sequence | Met 1-His 118 |
| Fusion Tag | C-His |
| Accession | Q6IA17-1 |
| Species | Human |
| Expressed Host | HEK293 Cells |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 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 | 14 kDa |
| AP Mol Mass | 25-35 kDa |
| Formulation | Lyophilized from sterile PBS, pH 7.4 |
| Research Areas | |
| Reconstitution | Please refer to the printed manual for detailed information. |
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