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Updated: Jun 17, 2026
07:20
Imaging ATG9A, a Multi-Spanning Membrane Protein
Published on: June 16, 2023
New insights into the function of Atg9
Jemma L Webber1, Sharon A Tooze
1London Research Institute, Cancer Research UK, London, United Kingdom.
FEBS Letters
|January 20, 2010
Summary
Autophagy relies on proteins like Atg9 for cellular balance. New research reveals p38IP regulates Atg9 trafficking, impacting autophagy in mammals and yeast.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Autophagy is a vital lysosomal degradation pathway for cellular homeostasis.
- Over 30 autophagy-related proteins, including the membrane protein Atg9, are known.
- Atg9's precise function in autophagy across eukaryotes remains unclear.
Purpose of the Study:
- To investigate the role of Atg9 trafficking in autophagy.
- To identify novel interacting partners of mammalian Atg9 (mAtg9).
- To elucidate the function of p38IP and p38 MAPK in regulating mAtg9 trafficking and autophagy.
Main Methods:
- Yeast and mammalian cell culture models.
- Protein-protein interaction studies to identify mAtg9 partners.
- Analysis of Atg9 trafficking dynamics.
- Investigating the impact of p38IP and p38 MAPK on autophagy.
Main Results:
- Identification of p38 MAPK interacting protein (p38IP) as a novel mAtg9 interacting partner.
- Evidence suggesting p38IP and p38 MAPK are involved in regulating mAtg9 trafficking.
- Demonstration of the role of Atg9 trafficking in both yeast and mammalian autophagy.
Conclusions:
- p38IP is a novel regulator of mAtg9 trafficking.
- p38 MAPK signaling pathway influences mAtg9 trafficking and autophagy.
- Understanding Atg9 trafficking is crucial for comprehending autophagy mechanisms.
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