Single immunoglobulin and toll-interleukin 1 receptor (TIR) domain
Gene Summary
SIGIRR acts as a negative regulator of the Toll-like and IL-1R receptor signaling pathways. It attenuates the recruitment of receptor-proximal signaling components to the TLR4 receptor, probably through a TIR-TIR domain interaction with TLR4. Through its extracellular domain it interferes with the heterodimerization of Il1R1 and IL1RAP.