CD218 antigen-like family member A,I,Il1,IL1 receptor-related protein,IL-18R1,IL-18R-1,Il18ralpha,IL-18Ralpha,IL-18R-alpha,Il1rrp,IL1R-rp,IL-1Rrp,interleukin 1 receptor related protein,interleukin-18 receptor 1,interleukin-18 receptor alpha.
Within the IL18 receptor complex, responsible for the binding of the proinflammatory cytokine IL18, but not IL1A nor IL1B. Involved in IL18-mediated IFNG synthesis from T-helper 1 (Th1) cells (By similarity). Contributes to IL18-induced cytokine production, either independently of SLC12A3, or as a complex with SLC12A3 (PubMed:26099046).