Primary structure and functional characterization of a high-affinity glutamate transporter

作者: Yoshikatsu Kanai , Matthias A. Hediger

DOI: 10.1038/360467A0

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摘要: GLUTAMATE transport across plasma membranes of neurons, glial cells and epithelial cells of the small intestine and kidney proceeds by high-and low-affinity transport systems1–5. High-affinity (Km 2–50 μM) transport systems have been described1, 6, 7 that are dependent on Na+ but not Cl− ions and have a preference for L-glutamate and D-and L-aspartate. In neurons high-affinity glutamate transporters are essential for terminating the postsynaptic action of glutamate by rapidly removing released glutamate from the synaptic cleft6, 7. We …

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