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Background
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Relevance: Inhibits the activity of interleukin-1 by binding to receptor IL1R1 and preventing its association with the coreceptor IL1RAP for signaling. Has no interleukin-1 like activity. Binds functional interleukin-1 receptor IL1R1 with greater affinity than decoy receptor IL1R2, however, the physiological relevance of the latter association is unsure. {ECO:0000269|PubMed:7775431}. Synonyms: IL-1RN, IRAP, ICIL-1RA, IL1 inhibitor, Anakinra
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