Enables organic anion transmembrane transporter activity. Involved in organic anion transport and renal tubular secretion. Acts upstream of or within anion transport. Is integral component of plasma membrane. Is expressed in several structures, including alimentary system; brain; genitourinary system; sensory organ; and skeleton. Orthologous to human SLC22A6 (solute carrier family 22 member 6). [provided by Alliance of Genome Resources, Apr 2022]