Predicted to enable identical protein binding activity and signaling receptor binding activity. Predicted to be involved in T cell activation; T cell receptor signaling pathway; and positive regulation of interferon-gamma production. Predicted to act upstream of or within several processes, including positive regulation of osteoblast differentiation; regulation of T cell proliferation; and regulation of cytokine production. Predicted to be integral component of membrane. Predicted to be active in external side of plasma membrane. Orthologous to human CD276 (CD276 molecule). [provided by Alliance of Genome Resources, Apr 2022]