Glutamate Receptor Channels
Glutamate Receptor Channels - Related Videos
07:14
Reconstitution of the Bacterial Glutamate Receptor Channel by Encapsulation of a Cell-Free Expression System
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Cited by 1 •
2024
This protocol describes the inverted emulsion method used to encapsulate a cell-free expression (CFE) system within a giant unilamellar vesicle (GUV) for the investigation of the synthesis and incorporation of a model membrane protein into the lipid bilayer.
05:27
An In Vitro Technique to Study Glutamate Receptor Trafficking in Hippocampal Neurons
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2025
This video demonstrates an antibody-feeding approach to study the trafficking of glutamate receptors in primary hippocampal neuronal cultures. This approach allows the observation of receptor populations at both the plasma and internal membranes. Discrimination between these subsets is achieved by labeling the receptors before and after membrane permeabilization, using the same primary antibody but secondary antibodies conjugated to different fluorophores.
09:49
Combined Optogenetic and Freeze-fracture Replica Immunolabeling to Examine Input-specific Arrangement of Glutamate Receptors in the Mouse Amygdala
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Cited by 6 •
2016
This article illustrates how the expression of neurotransmitter receptors can be quantified and the pattern analyzed at synapses with identified pre and postsynaptic elements using a combination of viral transduction of optogenetic tools and the freeze-fracture replica immunolabeling technique.
04:10
Analyzing the Glutamate Release and Clearance at a Single Neuron Synapse in a Mouse Brain Slice
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2025
This video demonstrates evaluating glutamate release and clearance at single corticostriatal synapses in a mouse brain slice. Electrical stimulation facilitates glutamate release at the synapse. The released glutamate alters sensor protein's fluorescence, which decays over time, indicating release and clearance efficiency.
10:59
Use of Label-free Optical Biosensors to Detect Modulation of Potassium Channels by G-protein Coupled Receptors
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Cited by 5 •
2014
Optical biosensor techniques can detect changes in mass near the plasma membrane in living cells and allow one to follow cellular responses in both individual cells and populations of cells. This protocol will describe detection of the modulation of potassium channels by G-protein coupled receptors in intact cells using this approach.
FAQs
All three receptor classes contribute to synaptic transmission, neuronal development, and activity-dependent synaptic plasticity, but NMDA receptors have an additional voltage-sensitive requirement. Glutamate binding promotes channel opening, while membrane depolarization removes magnesium block from NMDA receptors. This distinction allows NMDA-mediated signaling to depend on both chemical input and the electrical state of the neuron.
Calcium entry through some Glutamate Receptor Channels can provide a route by which glutamate-driven activity influences synaptic plasticity. Sodium also crosses these pores, but calcium has a distinct relevance because calcium-permeable channels are associated with activity-dependent changes in synaptic function. This makes calcium permeability an important variable when interpreting receptor effects in neurons.
Binding does not simply attach glutamate to a passive pore. It triggers a conformational change, meaning a rearrangement in the receptor protein, that opens the membrane pathway. Once open, the pore permits cations to cross, converting molecular recognition into an electrical effect. This coupling links chemical recognition directly to changes in neuronal electrical signaling.
Because these channels participate in activity-dependent synaptic plasticity, their behavior offers a way to connect patterns of neuronal activity with changes in synaptic communication. Research can examine how AMPA, NMDA, and kainate receptor contributions relate to those changes. This makes the channels useful biological subjects for investigating mechanisms associated with learning and memory.
Altered excitatory signaling can involve changes in the way Glutamate Receptor Channels convert glutamate-driven activity into neuronal electrical responses. Studying their ion passage, receptor activation, and NMDA receptor dependence on depolarization helps researchers examine where excitatory communication may be disrupted. This work can connect cellular channel behavior with neurological disorders associated with abnormal excitatory signaling.
Researchers can compare the electrical effects produced after glutamate activates AMPA, NMDA, or kainate channels, while paying particular attention to calcium and sodium entry. NMDA receptors also require membrane depolarization to relieve magnesium block, providing a distinguishing condition. Such comparisons can relate receptor-specific behavior to synaptic transmission, neuronal development, or activity-dependent synaptic plasticity.