Mediates sodium- and chloride-dependent transport of dopamine (  , ). Also mediates sodium- and chloride-dependent transport of norepinephrine (also known as noradrenaline) (By similarity). Regulator of light-dependent retinal hyaloid vessel regression, downstream of OPN5 signaling (By similarity).
Subcellular locations: Cell membrane, Cell projection, Neuron projection, Cell projection, Axon
Localizes to neurite tips in neuronal cells (By similarity). Colocalizes with SEPTIN4 at axon terminals, especially at the varicosities (By similarity).
Highly expressed in substantia nigra . Expressed in axonal varicosities in dopaminergic nerve terminals (at protein level) . Expressed in the striatum (at protein level) .