Predicted to enable hexose transmembrane transporter activity. Predicted to be involved in monosaccharide transmembrane transport. Predicted to be active in membrane. Human ortholog(s) of this gene implicated in epilepsy (multiple); glucose transporter type 1 deficiency syndrome (multiple); myelomeningocele; obesity; and type 2 diabetes mellitus. Orthologous to several human genes including SLC2A1 (solute carrier family 2 member 1); SLC2A4 (solute carrier family 2 member 4); and SLC2A5 (solute carrier family 2 member 5).