The function of IRAK2 (interleukin 1 receptor associated kinase 2, ENSG00000134070) is as follows. Binds to the IL-1 type I receptor following IL-1 engagement, triggering intracellular signaling cascades leading to transcriptional up-regulation and mRNA stabilization. {ECO:0000269|PubMed:10383454, ECO:0000269|PubMed:9374458}.