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Updated: Jul 4, 2026
08:06
Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient
Published on: September 3, 2014
Evolutionary expansion and anatomical specialization of synapse proteome complexity
Richard D Emes1, Andrew J Pocklington, Christopher N G Anderson
1Institute for Science and Technology in Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent ST4 7QB, UK.
Nature Neuroscience
|June 10, 2008
Summary
The evolution of synapses, crucial for learning and memory, shows increasing complexity from yeast to mammals. This complexity contributes to species diversity and brain specialization.
Area of Science:
- Neuroscience
- Evolutionary Biology
- Molecular Biology
Background:
- Synapses are fundamental for neural communication, learning, and memory.
- Understanding synapse evolution offers insights into brain organization and species diversity.
Purpose of the Study:
- To investigate the evolutionary trajectory of postsynaptic density (PSD) and membrane-associated guanylate kinase (MAGUK)-associated signaling complexes (MASCs).
- To explore the role of synaptic component evolution in species-specific adaptations and brain regionalization.
Main Methods:
- Comparative proteomics and genomics were employed to analyze PSD and MASC evolution across species.
- Proteomic comparison of Drosophila and mouse MASCs was conducted.
- mRNA and protein expression mapping in the mouse brain was performed.
Main Results:
- Synaptic components in yeast perform basic cellular functions, with significant complexity increases at the yeast-metazoan and invertebrate-vertebrate transitions.
- Key synaptic components like receptors, adhesion proteins, and scaffolds expanded during evolution.
- Mouse MASCs exhibit greater signaling complexity than Drosophila MASCs, indicating species-specific adaptation.
- Vertebrate-specific components drive differences in mouse brain regions, despite conserved core synaptic elements.
Conclusions:
- The evolution of synapse complexity, built upon a proto-synapse core, underlies invertebrate-vertebrate distinctions.
- Evolving synaptic complexity has significantly contributed to brain specialization across species.
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