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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

Target type

Proteins

Primary research area

Immunology & Infectious Disease

Molecular weight

45679Da