Evidence map›Paper›PMID 32039533›Full record

ArticleMolecular microbiology2020

FlhF regulates the number and configuration of periplasmic flagella in Borrelia burgdorferi.

Kai Zhang, Jun He, Claudio Cantalano, Youzhong Guo, Jun Liu, Chunhao Li

Erratum issuedAbstract read
In one paragraph

Article in Molecular microbiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Article
  2. Article
  3. mSphere · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Broadly conserved FlgV controls flagellar assembly andbioRxiv : the preprint server for biology · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Kai ZhangPhilips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA.
Jun HeDepartment of Microbial Pathogenesis, Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT, USA.
Claudio CantalanoDepartment of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.
Youzhong GuoDepartment of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA.
Jun LiuDepartment of Microbial Pathogenesis, Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT, USA.
Chunhao LiPhilips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA.ORCID 0000-0002-1872-4870

Funding

Structure-Function Relationships in the Spirochetal Flagellar MotorR01AI087946 · NIAID · YALE UNIVERSITY · PI LIU, JUN · 2010 to 2025
$6.6M
Understanding Unique Aspects of Motility and Chemotaxis in Borrelia burgdorferiR01AI078958 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI Chunhao Chris Li · 2008 to 2026
$5.7M
Exploring New Virulence Factors of the Oral Spirochete Treponema denticolaR01DE023080 · NIDCR · VIRGINIA COMMONWEALTH UNIVERSITY · PI Chunhao Chris Li · 2013 to 2026
$5.2M
NIAID NIH HHS R01 AI078958NIAID NIH HHS R01 AI087946NIDCR NIH HHS R01 DE023080
6 · The paper itself

Abstract

The Lyme disease bacterium Borrelia burgdorferi has 7-11 periplasmic flagella (PF) that arise from the cell poles and extend toward the midcell as a flat-ribbon, which is distinct from other bacteria. FlhF, a signal recognition particle (SRP)-like GTPase, has been found to regulate the flagellar number and polarity; however, its role in B. burgdorferi remains unknown. B. burgdorferi has an FlhF homolog (BB0270). Structural and biochemical analyses show that BB0270 has a similar structure and enzymatic activity as its counterparts from other bacteria. Genetics and cryo-electron tomography studies reveal that deletion of BB0270 leads to mutant cells that have less PF (4 ± 2 PF per cell tip) and fail to form a flat-ribbon, indicative of a role of BB0270 in the control of PF number and configuration. Mechanistically, we demonstrate that BB0270 localizes at the cell poles and controls the number and position of PF via regulating the flagellar protein stability and the polar localization of the MS-ring protein FliF. Our study not only provides the detailed characterizations of BB0270 and its profound impacts on flagellar assembly, morphology and motility in B. burgdorferi, but also unveils mechanistic insights into how spirochetes control their unique flagellar patterns.

Indexed as

Bacterial ProteinsBasal BodiesBorrelia burgdorferiElectron Microscope TomographyFlagellaGene DeletionLocomotionMonomeric GTP-Binding ProteinsBacterial ProteinsflhF protein, BacteriaMonomeric GTP-Binding ProteinsBorrelia burgdorferiLyme diseasemotilityperiplasmic flagellasignal recognition particle (SRP)-GTPase

Identifiers

PMID32039533
PMCPMC8085991

What OpenQuestion holds

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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.