Predicted to enable signaling receptor binding activity. Predicted to be involved in T cell receptor signaling pathway and regulation of cytokine production. Predicted to act upstream of or within negative regulation of T cell receptor signaling pathway; positive regulation of T cell proliferation; and positive regulation of interleukin-2 production. Predicted to be integral component of membrane. Predicted to be active in external side of plasma membrane. Human ortholog(s) of this gene implicated in several diseases, including Kawasaki disease; autoimmune disease (multiple); berylliosis; coronary artery disease; and sarcoidosis. Orthologous to human BTNL2 (butyrophilin like 2). [provided by Alliance of Genome Resources, Apr 2022]