Multiple consequences of mutating two conserved beta-bridge forming residues in the translocation cycle of a neuronal glutamate transporter.

Abstract excerpt

Glutamate transporters remove this neurotransmitter from the synapse in an electrogenic process. After sodium-coupled glutamate translocation, the cycle is completed by obligatory outward translocation of potassium. In the crystal structure of an archaeal homologue, two conserved residues form a beta-bridge, which points away from the binding pocket. In the neuronal glutamate transporter EAAC1, the equivalent...

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