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- Q1532394 subject Q8493004.
- Q1532394 subject Q8672800.
- Q1532394 abstract "Glutamate is an amino acid, one of the twenty amino acids used to construct proteins, and as a consequence is found in high concentration in every part of the body. In the nervous system it plays a special additional role as a neurotransmitter: a chemical that nerve cells use to send signals to other cells. In fact glutamate is by a wide margin the most abundant neurotransmitter in the vertebrate nervous system. It is used by every major excitatory information-transmitting pathway in the vertebrate brain, accounting in total for well over 90% of the synaptic connections in the human brain.Chemical receptors for glutamate fall into three major classes, known as AMPA receptors, NMDA receptors, and metabotropic glutamate receptors. Many synapses use multiple types of glutamate receptors. AMPA receptors are ionotropic receptors specialized for fast excitation: in many synapses they produce excitatory electrical responses in their targets a fraction of a millisecond after being stimulated. NMDA receptors are also ionotropic, but they differ from AMPA receptors in being permeable, when activated, to calcium. Their properties make them particularly important for learning and memory. Metabotropic receptors act through second messenger systems to create slow, sustained effects on their targets. A fourth class, known as kainate receptors, are similar in many respects to AMPA receptors, but much less abundant.Because of its role in synaptic plasticity, glutamate is involved in cognitive functions such as learning and memory in the brain. The form of plasticity known as long-term potentiation takes place at glutamatergic synapses in the hippocampus, neocortex, and other parts of the brain.Glutamate works not only as a point-to-point transmitter, but also through spill-over synaptic crosstalk between synapses in which summation of glutamate released from a neighboring synapse creates extrasynaptic signaling/volume transmission. In addition, glutamate plays important roles in the regulation of growth cones and synaptogenesis during brain development as originally described by Mark Mattson.".
- Q1532394 thumbnail L-Glutamate_Structural_Formulae.png?width=300.
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- Q1532394 comment "Glutamate is an amino acid, one of the twenty amino acids used to construct proteins, and as a consequence is found in high concentration in every part of the body. In the nervous system it plays a special additional role as a neurotransmitter: a chemical that nerve cells use to send signals to other cells. In fact glutamate is by a wide margin the most abundant neurotransmitter in the vertebrate nervous system.".
- Q1532394 label "Glutamate (neurotransmitter)".
- Q1532394 depiction L-Glutamate_Structural_Formulae.png.