Predicted to enable ammonium transmembrane transporter activity; ankyrin binding activity; and leak channel activity. Acts upstream of or within ammonium transmembrane transport; erythrocyte development; and multicellular organismal iron ion homeostasis. Predicted to be located in plasma membrane. Predicted to be integral component of plasma membrane. Is expressed in several structures, including alimentary system; cerebral cortex; liver; and spleen. Human ortholog(s) of this gene implicated in Rh deficiency syndrome; hemolytic anemia; and overhydrated hereditary stomatocytosis. Orthologous to human RHAG (Rh associated glycoprotein). [provided by Alliance of Genome Resources, Apr 2022]