Predicted to enable signaling receptor binding activity. Involved in negative regulation of cytokine production. Acts upstream of or within negative regulation of G1/S transition of mitotic cell cycle; negative regulation of signal transduction; and regulation of T cell activation. Located in cell surface. Orthologous to several human genes including BTN2A2 (butyrophilin subfamily 2 member A2). [provided by Alliance of Genome Resources, Apr 2022]