Predicted to enable several functions, including heat shock protein binding activity; protein kinase binding activity; and protein tyrosine kinase activator activity. Involved in immune response. Located in external side of plasma membrane. Is anchored component of external side of plasma membrane. Human ortholog(s) of this gene implicated in multiple sclerosis. Orthologous to human CD24 (CD24 molecule). [provided by Alliance of Genome Resources, Apr 2022]