Evidence map›Paper›PMID 22576621›Full record

ArticleCell reports2012

Structure of the SecY complex unlocked by a preprotein mimic.

Dilem Hizlan, Alice Robson, Sarah Whitehouse, Vicki A Gold, Janet Vonck, Deryck Mills, Werner Kühlbrandt, Ian Collinson

Abstract read
In one paragraph

Article in Cell reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
–field-weighted citation impact
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

45 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Forty years in cryoEM of membrane proteins.Microscopy (Oxford, England) · 2022
    Article
  5. Review
  6. Article
  7. The Dynamic SecYEG Translocon.Frontiers in molecular biosciences · 2021
    Review
  8. Refined measurement of SecA-driven protein secretion reveals that translocation is indirectly coupled to ATP turnover.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Specific cardiolipin-SecY interactions are required for proton-motive force stimulation of protein secretion.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Alignment of the protein substrate hairpin along the SecA two-helix finger primes protein transport inProceedings of the National Academy of Sciences of the United States of America · 2017
    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

8 authors.

Dilem HizlanMax Planck Institute of Biophysics, Department of Structural Biology, Max-von-Laue-Straße 3, D-60438 Frankfurt am Main, Germany.
Alice Robson
Sarah Whitehouse
Vicki A Gold
Janet Vonck
Deryck Mills
Werner Kühlbrandt
Ian Collinson

Funding

Biotechnology and Biological Sciences Research Council BB/F002343/1Biotechnology and Biological Sciences Research Council BB/F007248/1Wellcome Trust 082140
6 · The paper itself

Abstract

The Sec complex forms the core of a conserved machinery coordinating the passage of proteins across or into biological membranes. The bacterial complex SecYEG interacts with the ATPase SecA or translating ribosomes to translocate secretory and membrane proteins accordingly. A truncated preprotein competes with the physiological full-length substrate and primes the protein-channel complex for transport. We have employed electron cryomicroscopy of two-dimensional crystals to determine the structure of the complex unlocked by the preprotein. Its visualization in the native environment of the membrane preserves the active arrangement of SecYEG dimers, in which only one of the two channels is occupied by the polypeptide substrate. The signal sequence could be identified along with the corresponding conformational changes in SecY, including relocation of transmembrane segments 2b and 7 as well as the plug, which presumably then promote channel opening. Therefore, we propose that the structure describes the translocon unlocked by preprotein and poised for protein translocation.

Indexed as

Amino Acid SequenceCrystallizationCrystallography, X-RayEscherichia coliEscherichia coli ProteinsMembrane ProteinsModels, MolecularMolecular Sequence DataMultiprotein ComplexesPeptidesProtein BindingProtein MultimerizationProtein PrecursorsProtein Sorting SignalsProtein Structure, SecondaryProtein TransportEscherichia coli ProteinsMembrane ProteinsMultiprotein ComplexesPeptidesProtein PrecursorsProtein Sorting SignalsSecE protein, E coliSecG protein, E coliSEC Translocation ChannelsSecY protein, E coli

Identifiers

PMID22576621
PMCPMC3333808

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Registered trials

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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.