Evidence map›Paper›PMID 23781102›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Helical flow of surface protein required for bacterial gliding motility.

Daisuke Nakane, Keiko Sato, Hirofumi Wada, Mark J McBride, Koji Nakayama

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
6.6field-weighted citation impact, top 2% 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

84 citing papers in PubMed, 151 citations in OpenAlex.

  1. Review
  2. Chiral gliding: Right-handed navigation of filamentous cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Review
  4. Article
  5. Pleiotropic effects of signal peptide peptidase A (Frontiers in veterinary science · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Methylation of foreign DNA overcomes the restriction barrier ofApplied and environmental microbiology · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Gliding direction ofBiophysics and physicobiology · 2025
    Article
  18. A geometrical theory of gliding motility based on cell shape and surface flow.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  19. Article
  20. Article

24 more citing papers are in PubMed but not listed here.

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

5 authors at 3 institutions in 2 countries.

Daisuke NakaneDepartment of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, 852-8588 Nagasaki, Japan.
Keiko Sato
Hirofumi Wada
Mark J McBride
Koji Nakayama
Nagasaki University · JPRitsumeikan University · JPUniversity of Wisconsin–Milwaukee · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cells of Flavobacterium johnsoniae and of many other members of the phylum Bacteroidetes exhibit rapid gliding motility over surfaces by a unique mechanism. These cells do not have flagella or pili; instead, they rely on a novel motility apparatus composed of Gld and Spr proteins. SprB, a 669-kDa cell-surface adhesin, is required for efficient gliding. SprB was visualized by electron microscopy as thin 150-nm-long filaments extending from the cell surface. Fluorescence microscopy revealed movement of SprB proteins toward the poles of the cell at ∼2 μm/s. The fluorescent signals appeared to migrate around the pole and continue at the same speed toward the opposite pole along an apparent left-handed helical closed loop. Movement of SprB, and of cells, was rapidly and reversibly blocked by the addition of carbonyl cyanide m-chlorophenylhydrazone, which dissipates the proton gradient across the cytoplasmic membrane. In a gliding cell, some of the SprB protein appeared to attach to the substratum. The cell body moved forward and rotated with respect to this point of attachment. Upon reaching the rear of the cell, the attached SprB often was released from the substratum, and apparently recirculated to the front of the cell along a helical path. The results suggest a model for Flavobacterium gliding, supported by mathematical analysis, in which adhesins such as SprB are propelled along a closed helical loop track, generating rotation and translation of the cell body.

Indexed as

Adhesins, BacterialBacterial AdhesionFlavobacteriumGenes, BacterialMicroscopy, FluorescenceModels, BiologicalMovementMutationProton-Motive ForceAdhesins, Bacterialcell motilitycontinuous trackimmunofluorescence microscopyleft-handed helixproton motive force

Identifiers

PMID23781102
PMCPMC3704026
OpenAlexW2151800685

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.