[Term] id: PR:000001228 name: interleukin-1 receptor antagonist protein isoform 1 def: "An interleukin-1 receptor antagonist protein that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:P18510-1 or a 1:1 ortholog thereof." [PRO:CNA, PRO:DAN, PMID:2139180] comment: Category=sequence. synonym: "IL1RN/iso:1" EXACT PRO-short-label [PRO:DNx] synonym: "sIL-1ra" EXACT [] property_value: has_archetype PR:P18510-1 is_a: PR:000001137 ! interleukin-1 receptor antagonist protein