Predicted to enable sodium-independent organic anion transmembrane transporter activity. Predicted to be involved in sodium-independent organic anion transport. Predicted to be located in plasma membrane. Expressed in excretory cell and hypodermis. Is an ortholog of human SLCO4A1 (solute carrier organic anion transporter family member 4A1) and SLCO4C1 (solute carrier organic anion transporter family member 4C1).