Cited by 1,235Autophagy in Disease and TherapyCellular transport and secretionCalcium signaling and nucleotide metabolism

Two Beclin 1-binding proteins, Atg14L and Rubicon, reciprocally regulate autophagy at different stages

Matsunaga, Kohichi, Saitoh, Tatsuya, Tabata, Keisuke, Omori, Hiroko, Satoh, Takashi, Kurotori, Naoki, Maejima, Ikuko, Shirahama-Noda, Kanae +5 more·2009·Nature Cell Biology

Abstract

Beclin 1, a protein essential for autophagy, binds to hVps34/Class III phosphatidylinositol-3-kinase and UVRAG. Here, we have identified two Beclin 1 associated proteins, Atg14L and Rubicon. Atg14L and UVRAG bind to Beclin 1 in a mutually exclusive manner, whereas Rubicon binds only to a subpopulation of UVRAG complexes; thus, three different Beclin 1 complexes exist. GFP-Atg14L localized to the isolation membrane and autophagosome, as well as to the ER and unknown puncta. Knockout of Atg14L in mouse ES cells caused a defect in autophagosome formation. GFP-Rubicon was localized at the endosome/lysosome. Knockdown of Rubicon caused enhancement of autophagy, especially at the maturation step, as well as enhancement of endocytic trafficking. These data suggest that the Beclin 1-hVps34 complex functions in two different steps of autophagy by altering the subunit composition.

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Crossref · 10.1038/ncb1846

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Authors
Matsunaga, K., Saitoh, T., Tabata, K., Omori, H., Satoh, T., Kurotori, N., Maejima, I., Shirahama-Noda, K., Ichimura, T., Isobe, T., Akira, S., Noda, T., & Yoshimori, T.
Affiliations
  • The Graduate University for Advanced Studies, SOKENDAI (JP)
  • Immunology Frontier Research Center, The University of Osaka (JP)
  • Research Institute for Microbial Diseases, The University of Osaka (JP)
  • Tokyo Metropolitan University (JP)
  • Japan Science and Technology Agency (JP)
Corresponding author
Yoshimori, Tamotsu
Venue
Nature Cell Biology
Published
2009-03-08
Volume
11
Issue
4
Pages
385-396
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2064381459
Cited by
1,235
References
56
Citations by year
2026: 44 · 2025: 54 · 2024: 64 · 2023: 59 · 2022: 73 · 2021: 90 · 2020: 79 · 2019: 84 · 2018: 56 · 2017: 77 · 2016: 85 · 2015: 59 · 2014: 80 · 2013: 91 · 2012: 90
FWCI
53.71
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
Beclin-1, ATG14L, Rubicon, autophagy, autophagosome formation, autophagosome maturation, class III phosphatidylinositol 3-kinase, UVRAG, endosomal trafficking, endosomes, lysosomes, isolation membrane, endoplasmic reticulum
MeSH terms
Beclin-1, Animals, Autophagy, Endocytosis, Humans, Membrane Proteins, Microtubule-Associated Proteins, Phagosomes, Protein Binding, Protein Processing, Post-Translational, Recombinant Fusion Proteins, Adaptor Proteins, Vesicular Transport, RNA, Small Interfering, Cell Line, Tumor, Multiprotein Complexes, Green Fluorescent Proteins, Apoptosis Regulatory Proteins, Mice

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