SIGIRR
Function
Acts as a negative regulator of the Toll-like and IL-1R receptor signaling pathways. Attenuates the recruitment of receptor-proximal signaling components to the TLR4 receptor, probably through an TIR-TIR domain interaction with TLR4. Through its extracellular domain interferes with the heterodimerization of Il1R1 and IL1RAP.
Sequence Similarities
Belongs to the interleukin-1 receptor family.
Tissue Specificity
Mainly expressed in epithelial tissues such as kidney, lung and gut.
Cellular localization
- Membrane
- Single-pass type III membrane protein
Alternative names
UNQ301/PRO342, SIGIRR, Single Ig IL-1-related receptor, Single Ig IL-1R-related molecule, Single immunoglobulin domain-containing IL1R-related protein, Toll/interleukin-1 receptor 8, TIR8