Predicted to enable carbohydrate binding activity and pattern recognition receptor activity. Predicted to be involved in immune response. Predicted to be active in external side of plasma membrane. Is expressed in embryonic anal pad; embryonic dorsal epidermis; embryonic head epidermis; embryonic ventral epidermis; and larval imaginal tissue. Human ortholog(s) of this gene implicated in several diseases, including dengue disease (multiple); human immunodeficiency virus infectious disease (multiple); lung disease (multiple); respiratory syncytial virus infectious disease; and tuberculosis (multiple). Orthologous to human CD209 (CD209 molecule); SFTPA1 (surfactant protein A1); and SFTPA2 (surfactant protein A2).