FunctionReceptor for interleukin 18 (IL-18). Binding to the agonist leads to the activation of NF-kappa-B.
Tissue specificityExpressed in lung, leukocytes, spleen, liver, thymus, prostate, small intestine, colon, placenta, and heart, and is absent from brain, skeletal muscle, pancreas, and kidney. High level of expression in Hodgkin disease cell lines.
Sequence similaritiesBelongs to the interleukin-1 receptor family. Contains 3 Ig-like C2-type (immunoglobulin-like) domains. Contains 1 TIR domain.