Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Chemotaxis in E. coli01:27

Chemotaxis in E. coli

1.3K
Chemotaxis in Escherichia coli is a sensory-driven motility mechanism that enables bacteria to navigate chemical gradients, moving toward beneficial environments while avoiding harmful conditions. This process relies on a signal transduction system integrating external chemical cues with flagellar motor control.Chemoreceptors and Signal DetectionE. coli detects chemical gradients through methyl-accepting chemotaxis proteins (MCPs), which are membrane-bound chemoreceptors that sense attractants...
1.3K
Flagella and Motility in Bacteria01:18

Flagella and Motility in Bacteria

4.9K
Flagella are specialized, thread-like structures that extend from a bacteria's cell envelope. They play a crucial role in motility and chemotaxis. Their structural organization and functioning exemplify sophisticated biological engineering, enabling bacterial survival and adaptability in diverse environments.Structure of the FlagellumA bacterial flagellum consists of three key components: the filament, the hook, and basal body. The filament, a long, helical structure composed of repeating...
4.9K
Microtubules in Cell Motility01:24

Microtubules in Cell Motility

5.0K
Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
5.0K
Other Unique Bacteria01:18

Other Unique Bacteria

535
Magnetic bacteria exhibit a directed movement called magnetotaxis, driven by structures called magnetosomes. These magnetosomes consist of chains of magnetic particles made of either magnetite (Fe₃O₄) or greigite (Fe₃S₄) and are organized in a linear conformation by a protein scaffold within invaginations of the cell membrane. The bacteria align along the north–south magnetic field lines, much like a compass needle. They are typically microaerophilic or anaerobic...
535
Bacterial Phylum Tenericutes01:24

Bacterial Phylum Tenericutes

584
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
584
Bacterial Phylum Proteobacteria01:26

Bacterial Phylum Proteobacteria

1.2K
Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
1.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The last bacterial common ancestor encoded a complex flagellum.

bioRxiv : the preprint server for biology·2026
Same author

The <i>Campylobacter jejuni</i> flagellar V-ring discerns viscosity levels to alter swimming velocity, metabolic gene expression, and fitness.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Stable co-existence of <i>Citrobacter rodentium</i> with a lytic bacteriophage during <i>in vivo</i> murine infection.

mBio·2025
Same author

Author Correction: In situ structure of a bacterial flagellar motor at subnanometre resolution reveals adaptations for increased torque.

Nature microbiology·2025
Same author

In situ structure of a bacterial flagellar motor at subnanometre resolution reveals adaptations for increased torque.

Nature microbiology·2025
Same author

The structure of the complete extracellular bacterial flagellum reveals the mechanism of flagellin incorporation.

Nature microbiology·2025

Related Experiment Video

Updated: Mar 29, 2026

Investigating Flagella-Driven Motility in Escherichia coli by Applying Three Established Techniques in a Series
07:59

Investigating Flagella-Driven Motility in Escherichia coli by Applying Three Established Techniques in a Series

Published on: May 10, 2020

9.0K

Motility in the epsilon-proteobacteria.

Morgan Beeby1

  • 1Department of Life Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.

Current Opinion in Microbiology
|November 23, 2015
PubMed
Summary

Epsilon-proteobacteria swim faster in viscous environments than other bacteria due to their unique flagellar motor. This review explores these motility differences and recent discoveries.

Area of Science:

  • Microbiology
  • Bacterial Motility
  • Molecular Biology

Background:

  • Epsilon-proteobacteria are flagellated bacteria found in animal guts and hydrothermal vents.
  • Key genera include human pathogens Helicobacter and Campylobacter.
  • Flagellar motility is crucial for both pathogenic and environmental epsilon-proteobacteria.

Purpose of the Study:

  • To review current knowledge of epsilon-proteobacterial motility.
  • To highlight recent discoveries explaining motility differences compared to enteric bacteria.
  • To focus on the unique flagellar motor of epsilon-proteobacteria.

Main Methods:

  • Review of existing scientific literature on bacterial motility.
  • Analysis of molecular architecture of flagellar motors.

More Related Videos

Generation of Null Mutants to Elucidate the Role of Bacterial Glycosyltransferases in Bacterial Motility
12:29

Generation of Null Mutants to Elucidate the Role of Bacterial Glycosyltransferases in Bacterial Motility

Published on: March 11, 2022

2.8K
High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa
07:23

High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa

Published on: June 20, 2025

1.9K

Related Experiment Videos

Last Updated: Mar 29, 2026

Investigating Flagella-Driven Motility in Escherichia coli by Applying Three Established Techniques in a Series
07:59

Investigating Flagella-Driven Motility in Escherichia coli by Applying Three Established Techniques in a Series

Published on: May 10, 2020

9.0K
Generation of Null Mutants to Elucidate the Role of Bacterial Glycosyltransferases in Bacterial Motility
12:29

Generation of Null Mutants to Elucidate the Role of Bacterial Glycosyltransferases in Bacterial Motility

Published on: March 11, 2022

2.8K
High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa
07:23

High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa

Published on: June 20, 2025

1.9K
  • Comparative study of epsilon-proteobacterial and enteric bacterial motility paradigms.

    • Main Results:

    • Epsilon-proteobacteria exhibit high-speed swimming in viscous media, unlike enterics.
    • This phenotype is linked to the distinct molecular structure of their large flagellar motor.
    • Recent discoveries provide a rationale for these motility differences.

    Conclusions:

    • The unique flagellar motor of epsilon-proteobacteria enables high-speed motility in viscous environments.
    • Understanding these differences offers insights into bacterial adaptation and pathogenesis.
    • Further research into epsilon-proteobacterial motility is warranted.