Cytokine that binds to and signals through IL1RL1/ST2 and its stimulation recruits MYD88, IRAK1, IRAK4, and TRAF6, followed by phosphorylation of MAPK3/ERK1 and/or MAPK1/ERK2, MAPK14, and MAPK8. Induces T-helper type 2-associated cytokines. Belongs to the IL-1 family. Highly divergent. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Biological Process: positive regulation of interleukin-4 production; negative regulation of T-helper 1 type immune response; positive regulation of T-helper 2 type immune response; transcription, DNA-dependent; negative regulation of immunoglobulin secretion; negative regulation of interferon-gamma production; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; positive regulation of interleukin-6 production; positive regulation of transcription from RNA polymerase II promoter; positive regulation of interleukin-13 production; positive regulation of immunoglobulin secretion; negative regulation of leukocyte migration; positive regulation of interleukin-5 production; positive regulation of macrophage activation; positive regulation of inflammatory response
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.