Evidence map›Paper›PMID 29694367›Full record

ArticlePLoS genetics2018

Non-canonical role of the SNARE protein Ykt6 in autophagosome-lysosome fusion.

Szabolcs Takáts, Gábor Glatz, Győző Szenci, Attila Boda, Gábor V Horváth, Krisztina Hegedűs, Attila L Kovács, Gábor Juhász

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

57 citing papers in PubMed, 1 synthesis or guideline pooled it, 102 citations in OpenAlex.

  1. Guideline
  2. SNX-3 confers lysosomal fusion-competence to sustain basal autophagy.Cellular and molecular life sciences : CMLS · 2026
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  9. Virus infection and vesicle trafficking.Frontiers in immunology · 2025
    Review
  10. Mechanisms and roles of membrane-anchored ATG8s.Frontiers in cell and developmental biology · 2025
    Review
  11. Article
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  14. Review
  15. Article
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  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Szabolcs TakátsDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Gábor GlatzDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Győző SzenciDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Attila BodaDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Gábor V HorváthInstitute of Genetics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary.
Krisztina HegedűsDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Attila L KovácsDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.
Gábor JuhászDepartment of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, Budapest, Hungary.ORCID 0000-0001-8548-8874
Eötvös Loránd University · HUHUN-REN Szegedi Biológiai Kutatóközpont · HU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The autophagosomal SNARE Syntaxin17 (Syx17) forms a complex with Snap29 and Vamp7/8 to promote autophagosome-lysosome fusion via multiple interactions with the tethering complex HOPS. Here we demonstrate that, unexpectedly, one more SNARE (Ykt6) is also required for autophagosome clearance in Drosophila. We find that loss of Ykt6 leads to large-scale accumulation of autophagosomes that are unable to fuse with lysosomes to form autolysosomes. Of note, loss of Syx5, the partner of Ykt6 in ER-Golgi trafficking does not prevent autolysosome formation, pointing to a more direct role of Ykt6 in fusion. Indeed, Ykt6 localizes to lysosomes and autolysosomes, and forms a SNARE complex with Syx17 and Snap29. Interestingly, Ykt6 can be outcompeted from this SNARE complex by Vamp7, and we demonstrate that overexpression of Vamp7 rescues the fusion defect of ykt6 loss of function cells. Finally, a point mutant form with an RQ amino acid change in the zero ionic layer of Ykt6 protein that is thought to be important for fusion-competent SNARE complex assembly retains normal autophagic activity and restores full viability in mutant animals, unlike palmitoylation or farnesylation site mutant Ykt6 forms. As Ykt6 and Vamp7 are both required for autophagosome-lysosome fusion and are mutually exclusive subunits in a Syx17-Snap29 complex, these data suggest that Vamp7 is directly involved in membrane fusion and Ykt6 acts as a non-conventional, regulatory SNARE in this process.

Indexed as

AnimalsAnimals, Genetically ModifiedAutophagosomesBinding SitesDrosophila melanogasterDrosophila ProteinsLysosomesMembrane FusionModels, BiologicalMultiprotein ComplexesQa-SNARE ProteinsRecombinant ProteinsR-SNARE ProteinsSNARE ProteinsDrosophila ProteinsMultiprotein ComplexesQa-SNARE ProteinsRecombinant ProteinsR-SNARE ProteinsSnap29 protein, DrosophilaSNARE ProteinsVAMP7 protein, Drosophila

Identifiers

PMID29694367
PMCPMC5937789
OpenAlexW2802760911

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.