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Related Concept Videos

Transport Across the Golgi01:26

Transport Across the Golgi

While it is unclear how molecules move between adjacent Golgi cisternae, it is apparent that the molecules move from cis- cisterna, the entry face, to the trans- cisterna, the exit face. Experiments initially suggested vesicles that bud from one cisterna and fuse with the next cisterna to transport proteins between the cisternae. This vesicular transport model describes the Golgi apparatus as a relatively static structure with a unique enzyme composition in each cisterna. Molecules are...
Golgi Apparatus01:49

Golgi Apparatus

As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are transported by microtubule-based motor proteins and fuse together to form vesicular tubular clusters, subsequently arriving at the Golgi apparatus, a eukaryotic endomembrane organelle that often has a distinctive ribbon-like appearance.
Golgi Apparatus01:09

Golgi Apparatus

Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
Golgi Apparatus01:09

Golgi Apparatus

Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
Golgi Matrix Proteins01:12

Golgi Matrix Proteins

Golgi matrix proteins are a group of highly dynamic proteins that maintain the stacked structure of Golgi. These proteins adapt to rapid morphological changes of the Golgi during the cell cycle. During cell division, mild proteolysis removes these connections resulting in Golgi unstacking. In The daughter cells, these proteins help reassemble the unstacked Golgi.
One of the first identified Golgi matrix proteins was GM130, a rod-like protein located in the cis-Golgi. Subsequently, many Golgi...
Vesicular Tubular Clusters01:45

Vesicular Tubular Clusters

After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...

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Related Experiment Video

Updated: May 9, 2026

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
13:08

Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass

Published on: August 10, 2017

A three-stage model of Golgi structure and function.

Kasey J Day1, L Andrew Staehelin, Benjamin S Glick

  • 1Department of Molecular Genetics and Cell Biology, The University of Chicago, 920 East 58th Street, Chicago, IL, 60615, USA.

Histochemistry and Cell Biology
|July 25, 2013
PubMed
Summary

The Golgi apparatus has three functional stages: assembly, carbohydrate synthesis, and carrier formation. This classification, based on trafficking pathways, provides a unified framework for understanding Golgi apparatus function.

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In vitro Reconstitution of Cytoskeletal Networks inside Phase Separated Giant Unilamellar Vesicles (GUVs)

Published on: June 20, 2025

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • The Golgi apparatus comprises distinct cisternal classes with varying structures, compositions, and functions.
  • Current classification lacks consensus on the number and definition of these classes.

Purpose of the Study:

  • To propose a classification system for Golgi apparatus cisternae based on their trafficking pathways.
  • To define three functional stages of Golgi cisternal maturation: assembly, carbohydrate synthesis, and carrier formation.

Main Methods:

  • Analysis of vesicular trafficking pathways (COPII, COPI, clathrin-coated vesicles) associated with Golgi cisternae.
  • Integration of structural, compositional, and functional data to define cisternal stages.
  • Development of a model for Golgi apparatus maturation and function.

Main Results:

  • Proposed three classes of Golgi cisternae corresponding to maturation stages: cisternal assembly, carbohydrate synthesis, and carrier formation.
  • Defined the specific vesicular trafficking pathways (COPII, COPI, clathrin-coated vesicles) and functional roles at each stage.
  • Demonstrated discrete transitions between stages, with conserved trafficking pathways within each stage.

Conclusions:

  • The proposed three-stage model provides a unified framework for understanding Golgi apparatus properties across diverse organisms.
  • Classification based on trafficking pathways offers a functional perspective on Golgi cisternal dynamics.
  • This model facilitates a deeper understanding of protein modification, sorting, and transport within the Golgi apparatus.