Predicted to enable interleukin-33 binding activity and interleukin-33 receptor activity. Involved in several processes, including cellular response to mechanical stimulus; cellular response to peptide; and negative regulation of cell population proliferation. Located in external side of plasma membrane and extracellular space. Biomarker of acute myocardial infarction and bacterial pneumonia. Human ortholog(s) of this gene implicated in asthma and coronary artery disease. Orthologous to human IL1RL1 (interleukin 1 receptor like 1). [provided by Alliance of Genome Resources, Apr 2022]