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Updated: May 30, 2026
13:08
Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
Published on: August 10, 2017
Organization of SNAREs within the Golgi stack
Jörg Malsam1, Thomas H Söllner
1Heidelberg University Biochemistry Center, 69120 Heidelberg, Germany.
Cold Spring Harbor Perspectives in Biology
|July 20, 2011
Summary
Golgi apparatus cargo transport relies on membrane fusion mediated by SNARE complexes. These interactions, controlled by vesicle tethering and SM proteins, ensure specific vesicle targeting and fusion within the Golgi.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Intracellular transport relies on membrane fusion events within the Golgi apparatus.
- Anterograde and retrograde transport pathways are essential for protein and lipid trafficking.
- Specific protein machinery governs the precise targeting and fusion of transport vesicles.
Purpose of the Study:
- To elucidate the molecular mechanisms governing membrane fusion in the Golgi apparatus.
- To identify the key protein complexes involved in vesicle tethering and fusion.
- To understand how SNARE complexes mediate lipid bilayer merger for cargo transport.
Main Methods:
- Investigated the roles of SNARE complexes in Golgi membrane fusion.
- Analyzed the function of vesicle tethering factors and SM proteins.
- Examined the spatial and temporal regulation of transport vesicle targeting.
Main Results:
- Identified four functional SNARE complexes mediating lipid bilayer merger in the Golgi.
- Demonstrated that vesicle tethering and SM proteins tightly control SNARE complex function.
- Revealed a network of protein interactions dictating transport specificity.
Conclusions:
- SNARE complexes are critical for Golgi cargo transport via membrane fusion.
- Vesicle tethering and SM proteins provide regulatory control over fusion specificity.
- The intricate protein network ensures accurate vesicle targeting and fusion within the Golgi.
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