Predicted to enable MHC class I protein binding activity. Predicted to be involved in several processes, including positive regulation of gene expression; positive regulation of inositol phosphate biosynthetic process; and positive regulation of lymphocyte proliferation. 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 rheumatoid arthritis. Orthologous to human CD244 (CD244 molecule). [provided by Alliance of Genome Resources, Apr 2022]