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Interleukin 1 receptor, type II (IL-1R2) also known as CD121b (Cluster of Differentiation 121b) is an interleukin receptor. IL1R2 also denotes its human gene.

Quick Facts IL1R2, Available structures ...
IL1R2
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesIL1R2, CD121b, CDw121b, IL-1R-2, IL-1RT-2, IL-1RT2, IL1R2c, IL1RB, Interleukin 1 receptor, type II, interleukin 1 receptor type 2
External IDsOMIM: 147811; MGI: 96546; HomoloGene: 7783; GeneCards: IL1R2; OMA:IL1R2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001261419
NM_004633
NM_173343

NM_010555
NM_001360800
NM_001360801

RefSeq (protein)

NP_001248348
NP_004624

NP_034685
NP_001347729
NP_001347730

Location (UCSC)Chr 2: 101.99 – 102.03 MbChr 1: 40.11 – 40.16 Mb
PubMed search[3][4]
Wikidata
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Function

The protein encoded by this gene is a decoy receptor for certain cytokines that belongs to the interleukin-1 receptor family. This protein binds interleukin-1α (IL1A), interleukin-1β (IL1B), and interleukin 1 receptor antagonist (IL1Ra), preventing them from binding to their regular receptors and thereby inhibiting the transduction of their signaling. IL-1R2 protein also interacts non-productively with the second component of the signaling IL-1 receptor, namely IL-1RAcP,[5] and a complex of the IL-1R2 and IL-1RAcP extracellular domains with interleukin-1 beta has been solved by X-ray crystallography.[6] Interleukin 4 (IL4) is reported to antagonize the activity of interleukin 1 by inducing the expression and release of this cytokine. This gene and three other genes form a cytokine receptor gene cluster on chromosome 2q12. Two alternatively spliced transcript variants encoding the same protein have been reported.[7]

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See also

References

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Further reading

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