Sodium-independent transporter of chloride and iodide (  ). Mediates electroneutral chloride-bicarbonate, chloride-iodide and chloride-formate exchange with 1:1 stoichiometry ( , ). Mediates electroneutral iodide-bicarbonate exchange (By similarity).
Subcellular locations: Cell membrane, Apical cell membrane
Highly expressed in the kidney (at protein level) . High expression in adult thyroid, lower expression in adult and fetal kidney and fetal brain. Not expressed in other tissues .