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Related Concept Videos

Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Excitatory and Inhibitory Effects of Neurotransmitters01:29

Excitatory and Inhibitory Effects of Neurotransmitters

When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of specific...
G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory organs,...

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Related Experiment Video

Updated: Jun 28, 2026

Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors
07:51

Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors

Published on: November 14, 2014

GABA(A) Receptor Dynamics and Constructing GABAergic Synapses.

Verena Tretter1, Stephen J Moss

  • 1Department of Neuroscience, University of Pennsylvania Philadelphia, PA, USA.

Frontiers in Molecular Neuroscience
|October 24, 2008
PubMed
Summary
This summary is machine-generated.

Gamma-aminobutyric acid type A (GABA(A)) receptors are crucial for nervous system development and function. Their dynamic trafficking and molecular regulation maintain the critical balance between neural excitation and inhibition.

Keywords:
GABAA receptorinhibitionreceptor clusteringreceptor trafficking

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Using an α-Bungarotoxin Binding Site Tag to Study GABA A Receptor Membrane Localization and Trafficking
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Last Updated: Jun 28, 2026

Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors
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Inhibitory Synapse Formation in a Co-culture Model Incorporating GABAergic Medium Spiny Neurons and HEK293 Cells Stably Expressing GABAA Receptors

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Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission

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Using an α-Bungarotoxin Binding Site Tag to Study GABA A Receptor Membrane Localization and Trafficking
11:57

Using an α-Bungarotoxin Binding Site Tag to Study GABA A Receptor Membrane Localization and Trafficking

Published on: March 28, 2014

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cell Biology

Background:

  • GABA(A) receptors mediate gamma-aminobutyric acid actions in the central and peripheral nervous systems.
  • Early in development, GABAergic signaling is excitatory due to high intracellular chloride, promoting healthy neural development.
  • With KCC2 expression, GABA becomes inhibitory, establishing the primary inhibitory neurotransmission.

Purpose of the Study:

  • To provide an overview of the functional and molecular dynamics of GABA(A) receptors.
  • To highlight the role of GABA(A) receptor dynamics in maintaining excitation-inhibition balance.
  • To discuss how these dynamics adapt to changing neural network activity.

Main Methods:

  • Review of current literature on GABA(A) receptor assembly, trafficking, and regulation.
  • Analysis of the secretory pathway's role in receptor localization.
  • Examination of dynamic processes including trafficking, scaffold interactions, and posttranslational modifications.

Main Results:

  • GABA(A) receptors traffic through the secretory pathway to synaptic and extrasynaptic sites.
  • Receptor function is modulated by subtype-specific trafficking, scaffold interactions, and posttranslational modifications.
  • Dynamic exchange between surface and intracellular pools regulates receptor availability for recycling or degradation.

Conclusions:

  • The GABAergic system is highly dynamic, with GABA(A) receptors undergoing continuous regulation.
  • These molecular and functional dynamics are essential for maintaining neural network stability and adapting to activity changes.
  • Understanding GABA(A) receptor dynamics is key to comprehending the balance between neural excitation and inhibition.