Evidence map›Paper›PMID 23274110›Full record

ArticleJournal of molecular biology2013

A "mechanistic" explanation of the multiple helical forms adopted by bacterial flagellar filaments.

C R Calladine, B F Luisi, J V Pratap

Open access · hybridAbstract read
In one paragraph

Article in Journal of molecular biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.3field-weighted citation impact, top 24% 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

19 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Core-sheath coupling controls flagellar curvature and motility inbioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Helical reconstruction ofBiochemistry and biophysics reports · 2021
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. The swimming of a deforming helix.The European physical journal. E, Soft matter · 2018
    Article
  16. Article
  17. Article
  18. Review
  19. 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

3 authors at 1 institution in 1 country.

C R CalladineDepartment of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK. crc@eng.cam.ac.uk
B F Luisi
J V Pratap
University of Cambridge · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

The corkscrew-like flagellar filaments emerging from the surface of bacteria such as Salmonella typhimurium propel the cells toward nutrient and away from repellents. This kind of motility depends upon the ability of the flagellar filaments to adopt a range of distinct helical forms. A filament is typically constructed from ~30,000 identical flagellin molecules, which self-assemble into a tubular structure containing 11 near-longitudinal protofilaments. A "mechanical" model, in which the flagellin building block has the capacity to switch between two principal interfacial states, predicts that the filament can assemble into a "canonical" family of 12 distinct helical forms, each having unique curvature and twist: these include two "extreme" straight forms having left- and right-handed twists, respectively, and 10 intermediate helical forms. Measured shapes of the filaments correspond well with predictions of the model. This report is concerned with two unanswered questions. First, what properties of the flagellin determine which of the 12 discrete forms is preferred? Second, how does the interfacial "switch" work, at a molecular level? Our proposed solution of these problems is based mainly on a detailed examination of differences between the available electron cryo-microscopy structures of the straight L and R filaments, respectively.

Indexed as

Crystallography, X-RayCryoelectron MicroscopyFlagellaFlagellinModels, ChemicalProtein ConformationSalmonella typhimuriumFlagellin

Identifiers

PMID23274110
PMCPMC3605589
OpenAlexW1991992651

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.