Evidence map›Paper›PMID 22374876›Full record

ReviewProtein science : a publication of the Protein Society2012

Ratcheting up protein translocation with anthrax toxin.

Geoffrey K Feld, Michael J Brown, Bryan A Krantz

Open access · bronzeAbstract readReview
In one paragraph

Review in Protein science : a publication of the Protein Society, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

39 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. TheMicrobiology spectrum · 2019
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Relevance of the alternate conductance states of anthrax toxin channel.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  11. Article
  12. Article
  13. Membrane insertion of a Tc toxin in near-atomic detail.Nature structural & molecular biology · 2016
    Article
  14. Peptide- and proton-driven allosteric clamps catalyze anthrax toxin translocation across membranes.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  15. Article
  16. Review
  17. The Physics and Physical Chemistry of Molecular Machines.Chemphyschem : a European journal of chemical physics and physical chemistry · 2016
    Review
  18. Review
  19. 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

3 authors at 2 institutions in 1 country.

Geoffrey K FeldDepartment of Chemistry, University of California, Berkeley, California 94720, USA.
Michael J Brown
Bryan A Krantz
University of California, Berkeley · USQB3 · US

Funding

Physical Principles of Bacterial Toxin Translocation across MembranesR01AI077703 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI KRANTZ, BRYAN ANDREW · 2008 to 2017
$3.3M
NIAID NIH HHS R01-AI077703
6 · The paper itself

Abstract

Energy-consuming nanomachines catalyze the directed movement of biopolymers in the cell. They are found both dissolved in the aqueous cytosol as well as embedded in lipid bilayers. Inquiries into the molecular mechanism of nanomachine-catalyzed biopolymer transport have revealed that these machines are equipped with molecular parts, including adjustable clamps, levers, and adaptors, which interact favorably with substrate polypeptides. Biological nanomachines that catalyze protein transport, known as translocases, often require that their substrate proteins unfold before translocation. An unstructured protein chain is likely entropically challenging to bind, push, or pull in a directional manner, especially in a way that produces an unfolding force. A number of ingenious solutions to this problem are now evident in the anthrax toxin system, a model used to study protein translocation. Here we highlight molecular ratchets and current research on anthrax toxin translocation. A picture is emerging of proton-gradient-driven anthrax toxin translocation, and its associated ratchet mechanism likely applies broadly to other systems. We suggest a cyclical thermodynamic order-to-disorder mechanism (akin to a heat-engine cycle) is central to underlying protein translocation: peptide substrates nonspecifically bind to molecular clamps, which possess adjustable affinities; polypeptide substrates compress into helical structures; these clamps undergo proton-gated switching; and the substrate subsequently expands regaining its unfolded state conformational entropy upon translocation.

Indexed as

NanotechnologyAntigens, BacterialBacterial ToxinsModels, MolecularPeptidyl TransferasesProtein TransportProtein UnfoldingThermodynamicsanthrax toxinAntigens, BacterialBacterial ToxinsPeptidyl Transferases

Identifiers

PMID22374876
PMCPMC3403459
OpenAlexW2056700845

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.