Monoamine transporters (MATs) are protein structures that function as integral plasma-membrane transporters to regulate concentrations of extracellular monoamine neurotransmitters.
Valbenazine tosylate, the tosylate salt of valbenazine, is a vesicular monoamine transporter 2 (VMAT2) inhibitor with a Ki value of 150 nM while displaying no significant binding to VAMT1(Ki<10 μM).