Cited by 1,005Autophagy in Disease and TherapyCellular transport and secretionCalcium signaling and nucleotide metabolism

Distinct regulation of autophagic activity by Atg14L and Rubicon associated with Beclin 1–phosphatidylinositol-3-kinase complex

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Zhong, Yun, Wang, Qing Jun, Li, Xianting, Yan, Ying, Backer, Jonathan M., Chait, Brian T., Heintz, Nathaniel, Yue, Zhenyu·2009·Nature Cell Biology

Abstract

Beclin 1, a mammalian autophagy protein that has been implicated in development, tumour suppression, neurodegeneration and cell death, exists in a complex with Vps34, the class III phosphatidylinositol-3-kinase (PI(3)K) that mediates multiple vesicle-trafficking processes including endocytosis and autophagy. However, the precise role of the Beclin 1-Vps34 complex in autophagy regulation remains to be elucidated. Combining mouse genetics and biochemistry, we have identified a large in vivo Beclin 1 complex containing the known proteins Vps34, p150/Vps15 and UVRAG, as well as two newly identified proteins, Atg14L (yeast Atg14-like) and Rubicon (RUN domain and cysteine-rich domain containing, Beclin 1-interacting protein). Characterization of the new proteins revealed that Atg14L enhances Vps34 lipid kinase activity and upregulates autophagy, whereas Rubicon reduces Vps34 activity and downregulates autophagy. We show that Beclin 1 and Atg14L synergistically promote the formation of double-membraned organelles that are associated with Atg5 and Atg12, whereas forced expression of Rubicon results in aberrant late endosomal/lysosomal structures and impaired autophagosome maturation. We hypothesize that by forming distinct protein complexes, Beclin 1 and its binding proteins orchestrate the precise function of the class III PI(3)K in regulating autophagy at multiple steps.

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  • Yeast Atg14 is the autophagy-specific subunit of the Vps34 complex I, and a human homolog named ATG14 (ATG14L/BARKOR) has been identified.

    “Yeast Atg14 is the autophagy-specific subunit of the Vps34 complex I, 404 and a human homolog, named ATG14 (ATG14L/BARKOR), has been identified.[405][406][407][408]”

    From Guidelines for the use and interpretation of assays for monitoring autophagy (2012) · cites this paper as [406]

    The passage describing protein identification (section labeled Abstract; page unavailable) reports a newly identified mammalian protein with modest similarity to yeast Atg14 and names it Atg14L. However, the protein was isolated from mouse tissues, and our copy does not identify it as a human homolog or use the name BARKOR. The yeast-complex point is also described in the paper, but the citation in question follows the human-homolog point. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The class III PI3K complex regulates vesicle nucleation and phagophore formation.

    “the class III phosphoinositide 3-kinase (PI3K) complex regulates vesicle nucleation and phagophore formation”

    From Autophagy in kidney homeostasis and disease (2020) · cites this paper as [10]

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Authors
Zhong, Y., Wang, Q. J., Li, X., Yan, Y., Backer, J. M., Chait, B. T., Heintz, N., & Yue, Z.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Rockefeller University (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • Albert Einstein College of Medicine (US)
Corresponding author
Yue, Zhenyu
Venue
Nature Cell Biology
Published
2009-03-08
Volume
11
Issue
4
Pages
468-476
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1983831622
Cited by
1,005
References
35
Citations by year
2026: 29 · 2025: 43 · 2024: 38 · 2023: 48 · 2022: 63 · 2021: 62 · 2020: 69 · 2019: 51 · 2018: 57 · 2017: 58 · 2016: 72 · 2015: 56 · 2014: 64 · 2013: 77 · 2012: 64
FWCI
49.02
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Public Health Service (RNS055683A)
  • National Institute of Neurological Disorders and Stroke (R21NS055683, R01NS060123)
  • National Center for Research Resources (RR00862, P41RR000862, RR 022220, U54RR022220)
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
autophagy regulation, Beclin-1, ATG14L, Rubicon, Vps34, class III phosphatidylinositol 3-kinase, UVRAG, autophagosome maturation, late endosomes, lysosomes, ATG5, ATG12, lipid kinase activity
MeSH terms
Beclin-1, Amino Acid Sequence, Animals, Autophagy, Cell Membrane, HeLa Cells, Humans, Lysosomes, Molecular Sequence Data, Protein Binding, Proteins, Endosomes, Phosphatidylinositol Phosphates, Phosphatidylinositol 3-Kinases, NIH 3T3 Cells, Adaptor Proteins, Signal Transducing, Green Fluorescent Proteins, Apoptosis Regulatory Proteins, Mice

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