Involved in response to virus. Acts upstream of or within defense response to virus; negative regulation of viral entry into host cell; and somitogenesis. Predicted to be located in early endosome and lysosomal membrane. Predicted to be part of protein-containing complex. Predicted to be active in plasma membrane. Is expressed in several structures, including alimentary system; extraembryonic component; genitourinary system; respiratory system; and sensory organ. Human ortholog(s) of this gene implicated in adenosquamous gallbladder carcinoma and gallbladder adenocarcinoma. Orthologous to human IFITM1 (interferon induced transmembrane protein 1). [provided by Alliance of Genome Resources, Apr 2022]