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Related Concept Videos

Chemical Synapses01:26

Chemical Synapses

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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...
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Overview of Synapses01:25

Overview of Synapses

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A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...
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Electrical Synapses01:28

Electrical Synapses

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Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
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Protein Networks02:26

Protein Networks

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
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Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
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The Synapse02:47

The Synapse

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Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
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Updated: Aug 9, 2025

DetectSyn: A Rapid, Unbiased Fluorescent Method to Detect Changes in Synapse Density
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DetectSyn: A Rapid, Unbiased Fluorescent Method to Detect Changes in Synapse Density

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Proteomics-based synapse characterization: From proteins to circuits.

Gabriele Marcassa1, Dan Dascenco2, Joris de Wit1

  • 1VIB Center for Brain & Disease Research, Herestraat 49, 3000 Leuven, Belgium; KU Leuven, Department of Neurosciences, Leuven Brain Institute, Herestraat 49, 3000 Leuven, Belgium.

Current Opinion in Neurobiology
|February 22, 2023
PubMed
Summary
This summary is machine-generated.

Characterizing neural circuits is challenging due to cell diversity. New proteomic techniques offer sophisticated ways to analyze cell-specific and synaptic protein compositions, advancing our understanding of neural circuit function.

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Quantifying Synapses: an Immunocytochemistry-based Assay to Quantify Synapse Number
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Related Experiment Videos

Last Updated: Aug 9, 2025

DetectSyn: A Rapid, Unbiased Fluorescent Method to Detect Changes in Synapse Density
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Super-Resolution Imaging to Study Co-Localization of Proteins and Synaptic Markers in Primary Neurons
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Area of Science:

  • Neuroscience
  • Proteomics
  • Molecular Biology

Background:

  • Neuronal heterogeneity complicates neural circuit analysis at the protein level.
  • Understanding synaptic connections requires detailed protein composition data.

Purpose of the Study:

  • To review advanced proteomic approaches for dissecting neural circuits.
  • To discuss the potential of these methods for understanding neural circuit formation and function.
  • To provide an outlook on future technological developments in synaptic proteome characterization.

Main Methods:

  • Cell type-specific proteome analysis.
  • Cellular compartment-specific proteome analysis.
  • Synaptic connection proteome profiling.

Main Results:

  • New methods allow sophisticated dissection of cell type- and compartment-specific proteomes.
  • Profiling of specific synaptic connection protein composition is increasingly feasible.
  • These approaches promise to unravel molecular mechanisms of neural circuit formation and function.

Conclusions:

  • Advanced proteomic techniques are crucial for characterizing complex neural circuits.
  • Future technologies may enable single-synapse proteome characterization.
  • This research advances the understanding of neural circuit molecular mechanisms.