Evidence map›Paper›PMID 28137839›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Nucleotide-dependent switch in proteasome assembly mediated by the Nas6 chaperone.

Frances Li, Geng Tian, Deanna Langager, Vladyslava Sokolova, Daniel Finley, Soyeon Park

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Plasticity in the structure and assembly of proteasomes.The Journal of biological chemistry · 2026
    Review
  5. More 26S and 30S proteasomes are beneficial in proteinopathy.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Ubiquitin-dependent switch during assembly of the proteasomal ATPases mediated by Not4 ubiquitin ligase.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  18. Regulation of proteasome assembly and activity in health and disease.Nature reviews. Molecular cell biology · 2018
    Review
  19. Native Gel Approaches in Studying Proteasome Assembly and Chaperones.Methods in molecular biology (Clifton, N.J.) · 2018
    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

6 authors at 2 institutions in 1 country.

Frances LiDepartment of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80309.
Geng TianDepartment of Cell Biology, Harvard Medical School, Boston, MA 02115.
Deanna LangagerDepartment of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80309.
Vladyslava SokolovaDepartment of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80309.
Daniel FinleyDepartment of Cell Biology, Harvard Medical School, Boston, MA 02115.
Soyeon ParkDepartment of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80309; soyeon.park-1@colorado.edu.
University of Colorado Boulder · USHarvard University · US

Funding

Functional Analysis of the Proteasome BaseR37GM043601 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI FINLEY, DANIEL J · 2004 to 2013
$5.9M
UBIQUITIN-PROTEIN CONJUGATES AND FUSIONSR01GM043601 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI FINLEY, DANIEL J · 1990 to 2020
$4.3M
NIGMS NIH HHS R01 GM043601NIGMS NIH HHS R37 GM043601
6 · The paper itself

Abstract

The proteasome is assembled via the nine-subunit lid, nine-subunit base, and 28-subunit core particle (CP). Previous work has shown that the chaperones Rpn14, Nas6, Hsm3, and Nas2 each bind a specific ATPase subunit of the base and antagonize base-CP interaction. Here, we show that the Nas6 chaperone also obstructs base-lid association. Nas6 alternates between these two inhibitory modes according to the nucleotide state of the base. When ATP cannot be hydrolyzed, Nas6 interferes with base-lid, but not base-CP, association. In contrast, under conditions of ATP hydrolysis, Nas6 obstructs base-CP, but not base-lid, association. Modeling of Nas6 into cryoelectron microscopy structures of the proteasome suggests that Nas6 controls both base-lid affinity and base-CP affinity through steric hindrance; Nas6 clashes with the lid in the ATP-hydrolysis-blocked proteasome, but clashes instead with the CP in the ATP-hydrolysis-competent proteasome. Thus, Nas6 provides a dual mechanism to control assembly at both major interfaces of the proteasome.

Indexed as

Adenosine TriphosphateCryoelectron MicroscopyHydrolysisModels, MolecularMolecular ChaperonesNucleotidesProteasome Endopeptidase ComplexProtein BindingProtein DomainsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsAdenosine TriphosphateMolecular ChaperonesNAS6 protein, S cerevisiaeNucleotidesProteasome Endopeptidase ComplexSaccharomyces cerevisiae ProteinsAAA+ ATPaseassemblychaperoneNas6proteasome

Identifiers

PMID28137839
PMCPMC5321026
OpenAlexW2580364606

What OpenQuestion holds

Textmetadata
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.