Membrane transport proteins are appreciated for their ability to transport molecules across biological membranes and have received a renewed focus for their role in nervous system disorders. One such group of transporters are members of the solute carrier (SLC) family. SLC transporters shuttle various molecules, including neurotransmitters, fatty acids, amino acids, and inorganic ions. As such, they play an integral role in supplying cells with essential resources. An example is that amino acids are transported by SLC family members.