Evidence map›Paper›PMID 33558474›Full record

ArticleNature communications2021

Mechanism of the small ATP-independent chaperone Spy is substrate specific.

Rishav Mitra, Varun V Gadkari, Ben A Meinen, Carlo P M van Mierlo, Brandon T Ruotolo, James C A Bardwell

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Frustration in physiology and molecular medicine.Molecular aspects of medicine · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. Review
  7. Overoxidation and Oligomerization ofPathogens (Basel, Switzerland) · 2023
    Article
  8. A new kid in the folding funnel: Molecular chaperone activities of the BRICHOS domain.Protein science : a publication of the Protein Society · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. How do Chaperones Bind (Partly) Unfolded Client Proteins?Frontiers in molecular biosciences · 2021
    Review
  20. Stress-Responsive Periplasmic Chaperones in Bacteria.Frontiers in molecular biosciences · 2021
    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 3 institutions in 2 countries.

Rishav MitraHoward Hughes Medical Institute, University of Michigan, Ann Arbor, MI, USA.
Varun V GadkariDepartment of Chemistry, University of Michigan, Ann Arbor, MI, USA.
Ben A MeinenHoward Hughes Medical Institute, University of Michigan, Ann Arbor, MI, USA.
Carlo P M van MierloLaboratory of Biochemistry, Wageningen University, Wageningen, The Netherlands.ORCID 0000-0002-5358-8392
Brandon T RuotoloDepartment of Chemistry, University of Michigan, Ann Arbor, MI, USA.ORCID 0000-0002-6084-2328
James C A BardwellHoward Hughes Medical Institute, University of Michigan, Ann Arbor, MI, USA. jbardwel@umich.edu.
Howard Hughes Medical Institute · USUniversity of Michigan · USWageningen University & Research · NL

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

ATP-independent chaperones are usually considered to be holdases that rapidly bind to non-native states of substrate proteins and prevent their aggregation. These chaperones are thought to release their substrate proteins prior to their folding. Spy is an ATP-independent chaperone that acts as an aggregation inhibiting holdase but does so by allowing its substrate proteins to fold while they remain continuously chaperone bound, thus acting as a foldase as well. The attributes that allow such dual chaperoning behavior are unclear. Here, we used the topologically complex protein apoflavodoxin to show that the outcome of Spy's action is substrate specific and depends on its relative affinity for different folding states. Tighter binding of Spy to partially unfolded states of apoflavodoxin limits the possibility of folding while bound, converting Spy to a holdase chaperone. Our results highlight the central role of the substrate in determining the mechanism of chaperone action.

Indexed as

Adenosine TriphosphateAnabaenaApoproteinsAzotobacterEscherichia coliFlavodoxinKineticsMagnetic Resonance SpectroscopyMolecular ChaperonesMolecular ConformationMutant ProteinsPeriplasmic ProteinsProtein BindingProtein FoldingSubstrate SpecificityAdenosine TriphosphateapoflavodoxinApoproteinsFlavodoxinMolecular ChaperonesMutant ProteinsPeriplasmic Proteins

Identifiers

PMID33558474
PMCPMC7870927
OpenAlexW3126743868

What OpenQuestion 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 OpenQuestion graph.