The protein encoded by this gene is a member of the interleukin 1 receptor family. An experiment with transient gene expression demonstrated that this receptor was incapable of binding to interleukin 1 alpha and interleukin 1 beta with high affinity. This gene and four other interleukin 1 receptor family genes, including interleukin 1 receptor, type I (IL1R1), interleukin 1 receptor, type II (IL1R2), interleukin 1 receptor-like 1 (IL1RL1), and interleukin 18 receptor 1 (IL18R1), form a cytokine receptor gene cluster in a region mapped to chromosome 2q12.
^Lovenberg TW, Crowe PD, Liu C, Chalmers DT, Liu XJ, Liaw C, Clevenger W, Oltersdorf T, De Souza EB, Maki RA (Dec 1996). "Cloning of a cDNA encoding a novel interleukin-1 receptor related protein (IL 1R-rp2)". J Neuroimmunol. 70 (2): 113–22. doi:10.1016/S0165-5728(96)00047-1. PMID8898719.
^Dale M, Nicklin MJ (Jun 1999). "Interleukin-1 receptor cluster: gene organization of IL1R2, IL1R1, IL1RL2 (IL-1Rrp2), IL1RL1 (T1/ST2), and IL18R1 (IL-1Rrp) on human chromosome 2q". Genomics. 57 (1): 177–9. doi:10.1006/geno.1999.5767. PMID10191101.
^Debets R, Timans JC, Homey B, Zurawski S, Sana TR, Lo S, Wagner J, Edwards G, Clifford T, Menon S, Bazan JF, Kastelein RA (Jul 2001). "Two novel IL-1 family members, IL-1 delta and IL-1 epsilon, function as an antagonist and agonist of NF-kappa B activation through the orphan IL-1 receptor-related protein 2". Journal of Immunology. 167 (3): 1440–6. doi:10.4049/jimmunol.167.3.1440. PMID11466363.
Colotta F, Re F, Muzio M, et al. (1993). "Interleukin-1 type II receptor: a decoy target for IL-1 that is regulated by IL-4". Science. 261 (5120): 472–5. doi:10.1126/science.8332913. PMID8332913.
Torigoe K, Ushio S, Okura T, et al. (1997). "Purification and characterization of the human interleukin-18 receptor". J. Biol. Chem. 272 (41): 25737–42. doi:10.1074/jbc.272.41.25737. PMID9325300.
Born TL, Smith DE, Garka KE, et al. (2000). "Identification and characterization of two members of a novel class of the interleukin-1 receptor (IL-1R) family. Delineation of a new class of IL-1R-related proteins based on signaling". J. Biol. Chem. 275 (39): 29946–54. doi:10.1074/jbc.M004077200. PMID10882729.
Ozkara C, Uzan M, Tanriverdi T, et al. (2006). "Lack of association between IL-1beta/alpha gene polymorphisms and temporal lobe epilepsy with hippocampal sclerosis". Seizure : the journal of the British Epilepsy Association. 15 (5): 288–91. doi:10.1016/j.seizure.2006.02.016. PMID16546408.