Predicted to enable cytokine binding activity and cytokine receptor activity. Predicted to contribute to cytokine receptor activity; interleukin-12 receptor binding activity; and interleukin-23 binding activity. Predicted to be involved in several processes, including cellular response to cytokine stimulus; positive regulation of activated T cell proliferation; and positive regulation of defense response to virus by host. Predicted to act upstream of or within peptidyl-tyrosine phosphorylation. Predicted to be part of interleukin-12 receptor complex and interleukin-23 receptor complex. Predicted to be active in external side of plasma membrane. Biomarker of primary biliary cholangitis. Human ortholog(s) of this gene implicated in immunodeficiency 30. Orthologous to human IL12RB1 (interleukin 12 receptor subunit beta 1). [provided by Alliance of Genome Resources, Apr 2022]