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Related Concept Videos

Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

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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...
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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.
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Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
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Non-gated Ion Channels01:24

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Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
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Long-term Potentiation01:35

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Related Experiment Video

Updated: Apr 27, 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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Structure, function, and plasticity of GABA transporters.

Annalisa Scimemi1

  • 1Department of Biology, SUNY Albany Albany, NY, USA.

Frontiers in Cellular Neuroscience
|July 3, 2014
PubMed
Summary

Gamma-aminobutyric acid (GABA) transporters regulate brain signaling by controlling GABA levels. Their expression and mobility are modulated, fine-tuning GABAergic transmission plasticity.

Keywords:
GABAGABA transportersGAT1GAT3SLC6synaptic plasticitysynaptic transmissionuptake

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cell Biology

Background:

  • GABA transporters (GATs) are neurotransmitter:sodium symporters crucial for regulating extracellular GABA levels in the brain.
  • They are expressed in neurons and astrocytes, influencing synaptic activity under basal and active conditions.

Purpose of the Study:

  • To review current knowledge on the structural and functional properties of GABA transporters.
  • To highlight molecular mechanisms that modulate GAT expression and mobility at central synapses.

Main Methods:

  • Literature review of studies on GABA transporter structure, function, and regulation.
  • Analysis of evidence regarding intracellular signaling cascades affecting GAT cell membrane expression and mobility.

Main Results:

  • GABA transporters exhibit diverse expression patterns across brain regions.
  • Intracellular signaling pathways can modulate GAT membrane expression and lateral mobility.
  • Altering GAT density, distribution, and diffusion rates impacts synaptic strength and network activity.

Conclusions:

  • GABA transporter regulation by expression and mobility suggests complex systems controlling GABAergic transmission plasticity.
  • Understanding these mechanisms is key to comprehending neural network function and potential therapeutic targets.