ArticleJournal of bacteriology2007
On torque and tumbling in swimming Escherichia coli.
Article in Journal of bacteriology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 141 papers.
What it found
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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.
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.
Who cites it
141 citing papers in PubMed.
- Article
- Amplification of computational power by the multiplication of bacteria exploring microfluidic networks encoding mathematical problems.Microsystems & nanoengineering · 2026Article
- Bacterial motility in rhizosphere colonization: mechanisms, constraints, and implications for microbial inoculants.The ISME journal · 2026Review
- Flagellar location determines the stability of bacterial surface entrapment.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Load-dependent resistive-force theory for helical filaments.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2025Article
- Bacteria Optimize Tumble Bias to Strategically Navigate Surface Constraints.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Run-and-tumble dynamics ofJournal of the Royal Society, Interface · 2025Article
- Bacterial motility depends on a critical flagellum length and energy-optimized assembly.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- On the backward excursions in the free-swimming magnetotactic multicellular prokaryote 'Candidatus Magnetoglobus multicellularis'.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025Article
- Scrutinizing Stator Rotation in the Bacterial Flagellum: Reconciling Experiments and Switching Models.Biomolecules · 2025Review
- Wide-field bond-selective fluorescence imaging: from single-molecule to cellular imaging beyond video rate.Optica · 2025Article
- Physics of swimming and its fitness cost determine strategies of bacterial investment in flagellar motility.Nature communications · 2025Article
- Multiorifice acoustic microrobot for boundary-free multimodal 3D swimming.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Decoding Bacterial Motility: From Swimming States to Patterns and Chemotactic Strategies.Biomolecules · 2025Review
- The role of morphological adaptability inmBio · 2025Article
- Article
- Flagellum Pumping Efficiency in Shear-Thinning Viscoelastic Fluids.Journal of fluid mechanics · 2024Article
- Physical mechanism reveals bacterial slowdown above a critical number of flagella.Journal of the Royal Society, Interface · 2024Article
- Flagellar point mutation causes social aggregation in laboratory-adaptedJournal of bacteriology · 2024Article
- Reassessing the Standard Chemotaxis Framework for Understanding Biased Migration inAnnual review of chemical and biomolecular engineering · 2024Review
81 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
Bacteria swim by rotating long thin helical filaments, each driven at its base by a reversible rotary motor. When the motors of peritrichous cells turn counterclockwise (CCW), their filaments form bundles that drive the cells forward. We imaged fluorescently labeled cells of Escherichia coli with a high-speed charge-coupled-device camera (500 frames/s) and measured swimming speeds, rotation rates of cell bodies, and rotation rates of flagellar bundles. Using cells stuck to glass, we studied individual filaments, stopping their rotation by exposing the cells to high-intensity light. From these measurements we calculated approximate values for bundle torque and thrust and body torque and drag, and we estimated the filament stiffness. For both immobilized and swimming cells, the motor torque, as estimated using resistive force theory, was significantly lower than the motor torque reported previously. Also, a bundle of several flagella produced little more torque than a single flagellum produced. Motors driving individual filaments frequently changed directions of rotation. Usually, but not always, this led to a change in the handedness of the filament, which went through a sequence of polymorphic transformations, from normal to semicoiled to curly 1 and then, when the motor again spun CCW, back to normal. Motor reversals were necessary, although not always sufficient, to cause changes in filament chirality. Polymorphic transformations among helices having the same handedness occurred without changes in the sign of the applied torque.
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Registered trials
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.