Dopamine Transporter

The Dopamine Transporter (DAT) is an integral membrane protein predominantly expressed on the presynaptic terminals of dopaminergic neurons throughout the central nervous system. Its primary physiological role involves the active reuptake of dopamine from the synaptic cleft into the presynaptic neuron, a process critical for terminating dopaminergic signaling. This reuptake mechanism tightly regulates synaptic dopamine concentrations, thereby influencing a wide array of functions including motor control, reward processing, motivation, and arousal.