Predicted to enable ATPase-coupled intramembrane lipid transporter activity. Predicted to be involved in phospholipid translocation. Predicted to be located in membrane. Predicted to be active in plasma membrane and trans-Golgi network. Is expressed in several structures, including adult head; dorsal sensory complex proper primordium; embryonic hindgut; embryonic large intestine; and ganglia. Human ortholog(s) of this gene implicated in cerebellar ataxia, impaired intellectual development, and dysequilibrium syndrome 4. Orthologous to several human genes including ATP8A2 (ATPase phospholipid transporting 8A2).