Enables identical protein binding activity. Predicted to be involved in several processes, including induction of bacterial agglutination; negative regulation of interleukin-2 production; and regulation of phagocytosis. Predicted to act upstream of or within innate immune response and respiratory gaseous exchange by respiratory system. Located in cytoplasm. Is expressed in lung; otic capsule; and skeleton. Human ortholog(s) of this gene implicated in asthma; lung disease (multiple); respiratory syncytial virus infectious disease; and rhinitis. Orthologous to human SFTPD (surfactant protein D). [provided by Alliance of Genome Resources, Apr 2022]