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Related Concept Videos

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...
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.The Golgi apparatus is a major sorting and dispatch station for the products of the ER. Newly arriving vesicles enter...
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...
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...
Overview of Secretory Vesicles01:33

Overview of Secretory Vesicles

Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...

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Quantitative Localization of a Golgi Protein by Imaging Its Center of Fluorescence Mass
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Published on: August 10, 2017

Calcium in the Golgi apparatus.

Ludwig Missiaen1, Leonard Dode, Jo Vanoevelen

  • 1Afdeling Fysiologie, Departement Moleculaire Celbiologie, KULeuven Campus Gasthuisberg O/N, Herestraat 49 bus 802, B-3000 Leuven, Belgium. Ludwig.Missiaen@med.kuleuven.be

Cell Calcium
|December 5, 2006
PubMed
Summary

Secretory-pathway Ca2+-ATPases (SPCAs) transport essential ions into the Golgi. Mutations in the SPCA1 gene cause Hailey-Hailey disease, a skin disorder linked to keratinocyte detachment.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Dermatology

Background:

  • Secretory-pathway Ca2+-ATPases (SPCAs) are vital for maintaining Golgi apparatus ion homeostasis.
  • SPCAs supply the Golgi lumen with Ca2+ and Mn2+, crucial for protein modification and trafficking.
  • Mutations in the human SPCA1 gene (ATP2C1) are linked to cellular dysfunction.

Purpose of the Study:

  • To review the physiological roles of SPCAs.
  • To elucidate the mechanisms by which SPCA1 mutations lead to Hailey-Hailey disease.
  • To connect SPCA1 function to epidermal integrity.

Main Methods:

  • Literature review of SPCA physiology.
  • Analysis of genetic mutations in SPCA1.
  • Pathophysiological correlation between SPCA1 dysfunction and epidermal disorders.

Main Results:

  • SPCAs are essential for proper Golgi function and cellular health.
  • SPCA1 gene mutations disrupt Ca2+ and Mn2+ transport.
  • Altered ion homeostasis due to SPCA1 mutations results in keratinocyte detachment.

Conclusions:

  • SPCA1 plays a critical role in maintaining epidermal cell adhesion.
  • Dysfunctional SPCA1 proteins contribute to the pathogenesis of Hailey-Hailey disease.
  • Understanding SPCA1 function offers insights into treating this genetic skin disorder.