Evidence map›Paper›PMID 25197056›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Conformational change in the periplamic region of the flagellar stator coupled with the assembly around the rotor.

Shiwei Zhu, Masato Takao, Na Li, Mayuko Sakuma, Yuuki Nishino, Michio Homma, Seiji Kojima, Katsumi Imada

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
4.3field-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

46 citing papers in PubMed, 95 citations in OpenAlex.

  1. Article
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  5. Article
  6. Structural insight into sodium ion pathway in the bacterial flagellar stator from marineProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Article
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  11. FliL ring enhances the function of periplasmic flagella.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Review
  17. Putative Spanner Function of theJournal of bacteriology · 2021
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  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

8 authors at 2 institutions in 1 country.

Shiwei ZhuDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and.
Masato TakaoDepartment of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Na LiDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and.
Mayuko SakumaDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and.
Yuuki NishinoDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and.
Michio HommaDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and.
Seiji KojimaDivision of Biological Science, Graduate School of Science, Nagoya University, Chikusa-Ku, Nagoya 464-8602, Japan; and kimada@chem.sci.osaka-u.ac.jp z47616a@cc.nagoya-u.ac.jp.
Katsumi ImadaDepartment of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan kimada@chem.sci.osaka-u.ac.jp z47616a@cc.nagoya-u.ac.jp.
Nagoya University · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The torque of the bacterial flagellum is generated by the rotor-stator interaction coupled with the ion flow through the channel in the stator. Anchoring the stator unit to the peptidoglycan layer with proper orientation around the rotor is believed to be essential for smooth rotation of the flagellar motor. The stator unit of the sodium-driven flagellar motor of Vibrio is composed of PomA and PomB, and is thought to be fixed to the peptidoglycan layer and the T-ring by the C-terminal periplasmic region of PomB. Here, we report the crystal structure of a C-terminal fragment of PomB (PomBC) at 2.0-Å resolution, and the structure suggests a conformational change in the N-terminal region of PomBC for anchoring the stator. On the basis of the structure, we designed double-Cys replaced mutants of PomB for in vivo disulfide cross-linking experiments and examined their motility. The motility can be controlled reproducibly by reducing reagent. The results of these experiments suggest that the N-terminal disordered region (121-153) and following the N-terminal two-thirds of α1(154-164) in PomBC changes its conformation to form a functional stator around the rotor. The cross-linking did not affect the localization of the stator nor the ion conductivity, suggesting that the conformational change occurs in the final step of the stator assembly around the rotor.

Indexed as

Bacterial ProteinsCross-Linking ReagentsCysteineDisulfidesFlagellaIonsModels, MolecularMutationPeriplasmProtein Structure, TertiaryReducing AgentsSodiumSulfhydryl CompoundsVibrioBacterial ProteinsCross-Linking ReagentsCysteineDisulfidesIonsReducing AgentsSodiumSulfhydryl Compoundsion-driven motorpeptidoglycan bindingVibrio alginolyticusX-ray crystallography

Identifiers

PMID25197056
PMCPMC4169928
OpenAlexW2021040359

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.