Predicted to enable sialic acid transmembrane transporter activity. Predicted to be involved in sialic acid transport. Predicted to act upstream of or within sodium ion transport. Predicted to be located in plasma membrane. Predicted to be active in lysosome. Predicted to be integral component of plasma membrane. Is expressed in several structures, including alimentary system; genitourinary system; and spinal cord mantle layer. Orthologous to human SLC17A4 (solute carrier family 17 member 4). [provided by Alliance of Genome Resources, Apr 2022]