Predicted to enable carbohydrate binding activity. Predicted to be involved in positive regulation of killing of cells of other organism; positive regulation of nitric-oxide synthase activity; and positive regulation of nitric-oxide synthase biosynthetic process. Predicted to act upstream of or within positive regulation of humoral immune response mediated by circulating immunoglobulin. Predicted to be integral component of membrane. Predicted to be active in external side of plasma membrane. Orthologous to human FCER2 (Fc fragment of IgE receptor II). [provided by Alliance of Genome Resources, Apr 2022]