This protein binds to interleukin-12 (IL-12) with a low affinity, and is part of the IL-12 receptor complex. This protein forms a disulfide-linked oligomer, which is required for its IL-12 binding activity. The coexpression of this and IL-12Rβ2 protein was shown to lead to the formation of high-affinity IL-12 binding sites and reconstitution of IL-12 dependent signaling.
IL-12Rβ1 can also bind interleukin-23 (IL-23) as part of the IL-23 receptor complex. This complex forms a disulfide-linked oligomer, which is required for its IL-23 binding activity. The coexpression of this and IL-23R protein was shown to lead to the formation of IL-23 binding sites.
Various mutations in this gene were found to result in the immunodeficiency of patients with severe mycobacterial and Salmonella infections.[6] Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported.[5]
All mutations known in the IL12RB1 gene, as well as many polymorphisms, have been collected in a mutation database [7][8]
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Gillessen S, Carvajal D, Ling P, Podlaski FJ, Stremlo DL, Familletti PC, et al. (January 1995). "Mouse interleukin-12 (IL-12) p40 homodimer: a potent IL-12 antagonist". European Journal of Immunology. 25 (1): 200–206. doi:10.1002/eji.1830250133. PMID7843232. S2CID41702014.
Chua AO, Chizzonite R, Desai BB, Truitt TP, Nunes P, Minetti LJ, et al. (July 1994). "Expression cloning of a human IL-12 receptor component. A new member of the cytokine receptor superfamily with strong homology to gp130". Journal of Immunology. 153 (1): 128–136. doi:10.4049/jimmunol.153.1.128. PMID7911493. S2CID9211163.
Maruyama K, Sugano S (January 1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–174. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Yamamoto K, Kobayashi H, Miura O, Hirosawa S, Miyasaka N (1997). "Assignment of IL12RB1 and IL12RB2, interleukin-12 receptor beta 1 and beta 2 chains, to human chromosome 19 band p13.1 and chromosome 1 band p31.2, respectively, by in situ hybridization". Cytogenetics and Cell Genetics. 77 (3–4): 257–258. doi:10.1159/000134589. PMID9284929.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, Suyama A, Sugano S (October 1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–156. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
de Jong R, Altare F, Haagen IA, Elferink DG, Boer T, van Breda Vriesman PJ, et al. (May 1998). "Severe mycobacterial and Salmonella infections in interleukin-12 receptor-deficient patients". Science. 280 (5368): 1435–1438. Bibcode:1998Sci...280.1435D. doi:10.1126/science.280.5368.1435. PMID9603733.
Kawashima T, Kawasaki H, Kitamura T, Nojima Y, Morimoto C (May 1998). "Interleukin-12 induces tyrosine phosphorylation of an 85-kDa protein associated with the interleukin-12 receptor beta 1 subunit". Cellular Immunology. 186 (1): 39–44. doi:10.1006/cimm.1998.1294. PMID9637763.
Yao BB, Niu P, Surowy CS, Faltynek CR (August 1999). "Direct interaction of STAT4 with the IL-12 receptor". Archives of Biochemistry and Biophysics. 368 (1): 147–155. doi:10.1006/abbi.1999.1302. PMID10415122.
Losana G, Rigamonti L, Borghi I, Assenzio B, Ariotti S, Jouanguy E, et al. (March 2002). "Requirement for both IL-12 and IFN-gamma signaling pathways in optimal IFN-gamma production by human T cells". European Journal of Immunology. 32 (3): 693–700. doi:10.1002/1521-4141(200203)32:3<693::AID-IMMU693>3.0.CO;2-Q. PMID11857344. S2CID83984408.