A neurotransmitter transporter is a protein located in the cell membrane of neurons that helps regulate the levels of neurotransmitters in the synaptic cleft. These transporters work by reabsorbing neurotransmitters, such as serotonin or dopamine, back into the presynaptic neuron after they have transmitted signals to the postsynaptic neuron. This process is essential for maintaining proper communication between neurons and preventing excessive stimulation. Transporters play a crucial role in neurotransmitter recycling and are involved in various neurological processes. Dysfunction in these transporters can lead to several mental health disorders, including depression and schizophrenia. Understanding how neurotransmitter transporters function is vital for developing treatments for these conditions.