Evidence map›Paper›PMID 21992450›Full record

ArticleMolecular microbiology2011

Activated chemoreceptor arrays remain intact and hexagonally packed.

Ariane Briegel, Morgan Beeby, Martin Thanbichler, Grant J Jensen

Open access · greenAbstract read
In one paragraph

Article in Molecular microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

33 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Insights into Chemoreceptor MCP2201-Sensing D-Malate.International journal of molecular sciences · 2025
    Article
  3. Article
  4. Eukaryotic catecholamine hormones influence the chemotactic control ofProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Chemotaxis arrays inJournal of bacteriology · 2018
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Bacterial chemoreceptors and chemoeffectors.Cellular and molecular life sciences : CMLS · 2015
    Review
  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

4 authors at 3 institutions in 2 countries.

Ariane BriegelDivision of Biology, California Institute of Technology, Pasadena, CA 91125, USA.
Morgan Beeby
Martin Thanbichler
Grant J Jensen
California Institute of Technology · USHoward Hughes Medical Institute · USMax Planck Institute for Terrestrial Microbiology · DE

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Bacterial chemoreceptors cluster into exquisitively sensitive, tunable, highly ordered, polar arrays. While these arrays serve as paradigms of cell signalling in general, it remains unclear what conformational changes transduce signals from the periplasmic tips, where attractants and repellents bind, to the cytoplasmic signalling domains. Conflicting reports support and contest the hypothesis that activation causes large changes in the packing arrangement of the arrays, up to and including their complete disassembly. Using electron cryotomography, here we show that in Caulobacter crescentus, chemoreceptor arrays in cells grown in different media and immediately after exposure to the attractant galactose all exhibit the same 12 nm hexagonal packing arrangement, array size and other structural parameters. ΔcheB and ΔcheR mutants mimicking attractant- or repellent-bound states prior to adaptation also show the same lattice structure. We conclude that signal transduction and amplification must be accomplished through only small, nanoscale conformational changes.

Indexed as

Signal TransductionCaulobacter crescentusCryoelectron MicroscopyElectron Microscope TomographyGalactoseGene DeletionMacromolecular SubstancesMembrane ProteinsGalactoseMacromolecular SubstancesMembrane Proteins

Identifiers

PMID21992450
PMCPMC3641884
OpenAlexW2128862372

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.