Abstract
Fast chemical neurotransmission at the synapse is mediated by the release of neurotransmitters from synaptic vesicles (SVs) by exocytosis. In the mammalian central nervous system, the majority of neurons utilize amino acids such as glutamate, γ-aminobutyric acid (GABA), and glycine. Glutamate is the major excitatory neurotransmitter, whereas GABA and glycine are inhibitory. These amino acids are present at relatively high levels in the cytoplasm of presynaptic terminals and are accumulated into SVs for their exocytotic release. Over the past several decades, this essential process has been biochemically characterized and proteins responsible for neurotransmitter loading have been molecularly identified. Analysis of knockout animals has elucidated physiological significance of this process and moreover has deepened our understanding of glutamatergic and GABAergic neural circuits. However, the precise mechanism of the transport system remains largely unknown. In this chapter, I overview advances in the vesicular loading process and discuss some controversial concepts that may have important consequences for synaptic transmission.
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Takamori, S. (2015). Transport of Amino Acid Neurotransmitters into Synaptic Vesicles. In: Mochida, S. (eds) Presynaptic Terminals. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55166-9_12
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DOI: https://doi.org/10.1007/978-4-431-55166-9_12
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