Monoamine transporter protein (MAT (used collectively), but specific types are commonly known as DAT (dopamine transporter), NET (norepinephrine transporter), and SERT (serotonin transporter))

Monoamine transporter proteins are integral membrane proteins belonging to the solute carrier 6 (SLC6) family, primarily responsible for the active reuptake of the monoamine neurotransmitters dopamine, norepinephrine, and serotonin from the synaptic cleft into presynaptic neurons, thereby terminating neurotransmitter signaling and maintaining extracellular neurotransmitter homeostasis[1][3][5]. The major human members are the dopamine transporter (DAT, SLC6A3), norepinephrine transporter (NET, SLC6A2), and serotonin transporter (SERT, SLC6A4)[1][5]. These proteins utilize sodium and chloride ion gradients to drive the uptake process and are key pharmacological targets for numerous drugs affecting mood, attention, and reward, including antidepressants, stimulants, and drugs of abuse[3][4][7]. Dysfunction or dysregulation of these transporters is implicated in a range of mental health and neurodegenerative diseases[3][5][8].

Other names

Monoamine transportersMATsDopamine transporter (DAT)Serotonin transporter (SERT)Norepinephrine transporter (NET)Na^+/Cl^--dependent neurotransmitter transporters

Competitive inhibition of neurotransmitter reuptake (antidepressants, cocaine) Substrate-induced reverse transport/efflux (amphetamines) Allosteric modulation or stabilization of transporter conformational states