Evidence map›Paper›PMID 24335957›Full record

ArticleNature communications2013

A phenylalanine rotameric switch for signal-state control in bacterial chemoreceptors.

Davi R Ortega, Chen Yang, Peter Ames, Jerome Baudry, John S Parkinson, Igor B Zhulin

Abstract read
In one paragraph

Article in Nature communications, 2013. 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
–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

33 citing papers in PubMed.

  1. Structure and signaling mechanism ofbioRxiv : the preprint server for biology · 2026
    Article
  2. Review
  3. Review
  4. A chemoreceptor conformational equilibrium controlled by signaling inputs.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Article
  6. Article
  7. Review
  8. Discovery of a New Chemoeffector forACS bio & med chem Au · 2022
    Article
  9. Structural signatures ofProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Conformational shifts in a chemoreceptor helical hairpin control kinase signaling inProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  15. mBio · 2019
    Article
  16. Article
  17. Article
  18. A zipped-helix cap potentiates HAMP domain control of chemoreceptor signaling.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  19. Article
  20. Assigning chemoreceptors to chemosensory pathways 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

6 authors.

Davi R OrtegaJoint Institute for Computational Sciences, University of Tennessee - Oak Ridge National Laboratory, Oak Ridge, Tennessee 37861, USA.
Chen YangDepartment of Biology, University of Utah, Salt Lake City, Utah 84112, USA.
Peter AmesDepartment of Biology, University of Utah, Salt Lake City, Utah 84112, USA.
Jerome Baudry1] Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996, USA [2] Center for Molecular Biophysics, University of Tennessee - Oak Ridge National Laboratory, Oak Ridge, Tennessee 37861, USA.
John S ParkinsonDepartment of Biology, University of Utah, Salt Lake City, Utah 84112, USA.
Igor B Zhulin1] Joint Institute for Computational Sciences, University of Tennessee - Oak Ridge National Laboratory, Oak Ridge, Tennessee 37861, USA [2] Department of Microbiology, University of Tennessee, Knoxville, Tennessee, 37996, USA [3] Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37861, USA.

Funding

Intracellular Signaling by Bacterial ChemoreceptorsR01GM019559 · NIGMS · UTAH STATE HIGHER EDUCATION SYSTEM--UNIVERSITY OF UTAH · PI JOHN S PARKINSON · 1985 to 2026
$12.3M
Computational Genomics of Signal TransductionR01GM072285 · NIGMS · UNIVERSITY OF TENNESSEE KNOXVILLE · PI JOULINE, IGOR B. · 2004 to 2018
$3.2M
INTRACELLULAR SIGNALING BY BACTERIAL CHEMORECEPTORSR37GM019559 · NIGMS · UNIVERSITY OF UTAH · PI PARKINSON, JOHN S · 1992 to 2001
$806k
NIGMS NIH HHS GM072285NIGMS NIH HHS GM19559NIGMS NIH HHS R01 GM019559NIGMS NIH HHS R01 GM072285NIGMS NIH HHS R37 GM019559
6 · The paper itself

Abstract

Bacterial chemoreceptors are widely used as a model system for elucidating the molecular mechanisms of transmembrane signalling and have provided a detailed understanding of how ligand binding by the receptor modulates the activity of its associated kinase CheA. However, the mechanisms by which conformational signals move between signalling elements within a receptor dimer and how they control kinase activity remain unknown. Here, using long molecular dynamics simulations, we show that the kinase-activating cytoplasmic tip of the chemoreceptor fluctuates between two stable conformations in a signal-dependent manner. A highly conserved residue, Phe396, appears to serve as the conformational switch, because flipping of the stacked aromatic rings of an interacting F396-F396' pair in the receptor homodimer takes place concomitantly with the signal-related conformational changes. We suggest that interacting aromatic residues, which are common stabilizers of protein tertiary structure, might serve as rotameric molecular switches in other biological processes as well.

Indexed as

Amino Acid MotifsAmino Acid SequenceBacterial ProteinsChemotaxisConserved SequenceDimerizationEscherichia coliEscherichia coli ProteinsHistidine KinaseMembrane ProteinsMethyl-Accepting Chemotaxis ProteinsMolecular Sequence DataPhenylalanineProtein ConformationBacterial ProteinscheA protein, E coliEscherichia coli ProteinsHistidine KinaseMembrane ProteinsMethyl-Accepting Chemotaxis ProteinsPhenylalanine

Identifiers

PMID24335957
PMCPMC4310728

What OpenQuestion holds

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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.