Predicted to enable interleukin-28 receptor binding activity. Predicted to be involved in several processes, including defense response to other organism; negative regulation of immune response; and regulation of gene expression. Predicted to be located in extracellular region. Predicted to be part of interleukin-28 receptor complex. Predicted to be active in extracellular space. Human ortholog(s) of this gene implicated in several diseases, including COVID-19; cryoglobulinemia; dengue hemorrhagic fever; hepatitis C; and liver disease (multiple). Orthologous to human IFNL1 (interferon lambda 1); IFNL2 (interferon lambda 2); and IFNL3 (interferon lambda 3). [provided by Alliance of Genome Resources, Apr 2022]