Predicted to enable signaling receptor binding activity. Predicted to be involved in Golgi to plasma membrane protein transport; cobalamin transport; and receptor-mediated endocytosis. Predicted to act upstream of or within excretion. Located in brush border membrane and endocytic vesicle. Part of protein-containing complex. Human ortholog(s) of this gene implicated in megaloblastic anemia. Orthologous to human AMN (amnion associated transmembrane protein). [provided by Alliance of Genome Resources, Apr 2022]