Evidence map›Paper›PMID 35794005›Full record

ArticleLife science alliance2022

CryoEM of endogenous mammalian V-ATPase interacting with the TLDc protein mEAK-7.

Yong Zi Tan, Yazan M Abbas, Jing Ze Wu, Di Wu, Kristine A Keon, Geoffrey G Hesketh, Stephanie A Bueler, Anne-Claude Gingras, Carol V Robinson, Sergio Grinstein and 1 more

Open access · goldAbstract read
In one paragraph

Article in Life science alliance, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Review
  2. ATG16L1 controls mammalian vacuolar proton ATPase.The Journal of cell biology · 2025
    Article
  3. Review
  4. Review
  5. Oxr1 and Ncoa7 regulate V-ATPase to achieve optimal pH for glycosylation within the Golgi apparatus and trans-Golgi network.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Interaction of yeast V-ATPase with TLDc protein Rtc5p.bioRxiv : the preprint server for biology · 2025
    Article
  7. Structure of ATP synthase from an early photosynthetic bacteriumProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Structure of yeast RAVE bound to a partial VProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Tender love and disassembly: How a TLDc domain protein breaks the V-ATPase.BioEssays : news and reviews in molecular, cellular and developmental biology · 2023
    Article
  17. Identification of mEAK-7 as a human V-ATPase regulator via cryo-EM data mining.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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

11 authors at 4 institutions in 2 countries.

Yong Zi TanMolecular Medicine Program, The Hospital for Sick Children Research Institute, Toronto, Canada.ORCID 0000-0001-6656-6320
Yazan M AbbasMolecular Medicine Program, The Hospital for Sick Children Research Institute, Toronto, Canada.
Jing Ze WuProgram in Cell Biology, The Hospital for Sick Children, Toronto, Canada.ORCID 0000-0001-6592-320X
Di WuPhysical and Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK.
Kristine A KeonMolecular Medicine Program, The Hospital for Sick Children Research Institute, Toronto, Canada.ORCID 0000-0001-8185-3803
Geoffrey G HeskethLunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Canada.ORCID 0000-0002-5570-7615
Stephanie A BuelerMolecular Medicine Program, The Hospital for Sick Children Research Institute, Toronto, Canada.
Anne-Claude GingrasLunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Canada.ORCID 0000-0002-6090-4437
Carol V RobinsonPhysical and Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK.
Sergio GrinsteinProgram in Cell Biology, The Hospital for Sick Children, Toronto, Canada.ORCID 0000-0002-0795-4160
John L RubinsteinMolecular Medicine Program, The Hospital for Sick Children Research Institute, Toronto, Canada john.rubinstein@utoronto.ca.ORCID 0000-0003-0566-2209
Hospital for Sick Children · CAUniversity of Toronto · CAUniversity of Oxford · GBLunenfeld-Tanenbaum Research Institute · CA

Funding

CIHR FDN-143202CIHR FDN-143301CIHR PJT166152Wellcome TrustWellcome Trust 221795/Z/20/Z
6 · The paper itself

Abstract

V-ATPases are rotary proton pumps that serve as signaling hubs with numerous protein binding partners. CryoEM with exhaustive focused classification allowed detection of endogenous proteins associated with porcine kidney V-ATPase. An extra C subunit was found in ∼3% of complexes, whereas ∼1.6% of complexes bound mEAK-7, a protein with proposed roles in dauer formation in nematodes and mTOR signaling in mammals. High-resolution cryoEM of porcine kidney V-ATPase with recombinant mEAK-7 showed that mEAK-7's TLDc domain interacts with V-ATPase's stator, whereas its C-terminal α helix binds V-ATPase's rotor. This crosslink would be expected to inhibit rotary catalysis. However, unlike the yeast TLDc protein Oxr1p, exogenous mEAK-7 does not inhibit V-ATPase and mEAK-7 overexpression in cells does not alter lysosomal or phagosomal pH. Instead, cryoEM suggests that the mEAK-7:V-ATPase interaction is disrupted by ATP-induced rotation of the rotor. Comparison of Oxr1p and mEAK-7 binding explains this difference. These results show that V-ATPase binding by TLDc domain proteins can lead to effects ranging from strong inhibition to formation of labile interactions that are sensitive to the enzyme's activity.

Indexed as

Vacuolar Proton-Translocating ATPasesAnimalsCryoelectron MicroscopyMammalsProtein BindingProtein SubunitsSwineProtein SubunitsVacuolar Proton-Translocating ATPases

Identifiers

PMID35794005
PMCPMC9263379
OpenAlexW4284897470

What OpenQuestion holds

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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 OpenQuestion graph.