Evidence map›Paper›PMID 25195048›Full record

ArticleNature structural & molecular biology2014

Mechanochemical basis of protein degradation by a double-ring AAA+ machine.

Adrian O Olivares, Andrew R Nager, Ohad Iosefson, Robert T Sauer, Tania A Baker

Open access · greenAbstract read
In one paragraph

Article in Nature structural & molecular biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
–field-weighted citation impact, top 98% 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

55 citing papers in PubMed, 5 citations in OpenAlex.

  1. ClpP2 modulates ClpXP assembly to promote multiple pathogenic phenotypes inProceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Toxin-based screening of C-terminal tags inbioRxiv : the preprint server for biology · 2024
    Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. AAA+ proteins: one motor, multiple ways to work.Biochemical Society transactions · 2022
    Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Multistep substrate binding and engagement by the AAA+ ClpXP protease.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  18. Article
  19. Article
  20. 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

5 authors at 1 institution in 1 country.

Adrian O OlivaresDepartment of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Andrew R Nager1] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. [2].
Ohad IosefsonDepartment of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Robert T SauerDepartment of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Tania A Baker1] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. [2] Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Massachusetts Institute of Technology · US

Funding

REPRESSOR &ANTIREPRESSOR PROTEINS OF BACTERIOPHAGER01AI016892 · NIAID · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BAKER, TANIA A, SAUER, ROBERT T · 1985 to 2022
$13.0M
Howard Hughes Medical InstituteNIAID NIH HHS AI-16892NIAID NIH HHS R01 AI016892
6 · The paper itself

Abstract

Molecular machines containing double or single AAA+ rings power energy-dependent protein degradation and other critical cellular processes, including disaggregation and remodeling of macromolecular complexes. How the mechanical activities of double-ring and single-ring AAA+ enzymes differ is unknown. Using single-molecule optical trapping, we determine how the double-ring ClpA enzyme from Escherichia coli, in complex with the ClpP peptidase, mechanically degrades proteins. We demonstrate that ClpA unfolds some protein substrates substantially faster than does the single-ring ClpX enzyme, which also degrades substrates in collaboration with ClpP. We find that ClpA is a slower polypeptide translocase and that it moves in physical steps that are smaller and more regular than steps taken by ClpX. These direct measurements of protein unfolding and translocation define the core mechanochemical behavior of a double-ring AAA+ machine and provide insight into the degradation of proteins that unfold via metastable intermediates.

Indexed as

ProteolysisAdenosine TriphosphateEndopeptidase ClpEscherichia coliEscherichia coli ProteinsHydrolysisOptical TweezersProtein UnfoldingAdenosine TriphosphateClpA protease, E coliClpP protease, E coliEndopeptidase ClpEscherichia coli Proteins

Identifiers

PMID25195048
PMCPMC4190165
OpenAlexW1588599664

What OpenQuestion holds

Textmetadata
LicenceTDM
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.