Reference EntryDOI
Bacterial Flagella: Flagellar Motor
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The bacterial flagellar motor is a rotary molecular motor situated in the cell envelopes of bacteria that is driven by a flow of charged ions across the bacterial plasma membrane.Abstract:
The bacterial flagellar motor is a rotary molecular motor situated in the cell envelopes of bacteria that is driven by a flow of charged ions across the bacterial plasma membrane The motor powers the rotation of helical flagellar filaments so that bacteria swim, frequently towards a more favourable location
Keywords:
bacterial motility;
molecular motors;
protein machines;
chemotaxis;
signallingread more
Citations
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Journal ArticleDOI
A study of bacterial flagellar bundling
TL;DR: An analysis of the flow surrounding the flagella provides some intuition for these processes and proposes a computational model based on the equations of Stokes flow to describe the fluid motion.
Journal ArticleDOI
The unique structure of archaeal ‘hami’, highly complex cell appendages with nano‐grappling hooks
TL;DR: It is shown that a novel group of archaea from cold, sulphidic springs has developed cell surface appendages of an unexpectedly high complexity with a well‐defined base‐to‐top organization, and represents a new class of filamentous cell appendages, for which the term ‘hamus’ is proposed.
Journal ArticleDOI
Targeted drug delivery technology using untethered microrobots: a review
Journal ArticleDOI
Biological Nanomotors with a Revolution, Linear, or Rotation Motion Mechanism
TL;DR: This review focuses on recent findings about various aspects of motors, including chirality, stoichiometry, channel size, entropy, conformational change, and energy usage rate, in a variety of well-studied motors,including FoF1 ATPase, helicases, viral dsDNA-packaging motors, bacterial chromosome translocases, myosin, kinesin, and dynein.
Book ChapterDOI
“Push Through One-Way Valve” Mechanism of Viral DNA Packaging
TL;DR: This chapter focuses on the most recent findings in the bacteriophage ϕ29 DNA packaging nanomotor to address the idea that viral DNA packaging motors exercise a mechanism similar to the action of AAA+ ATPases that assemble into ring-shaped oligomers with a central channel.
References
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Journal ArticleDOI
Chemotaxis in Escherichia coli analysed by Three-dimensional Tracking
Howard C. Berg,Douglas A. Brown +1 more
TL;DR: Chemotaxis toward amino-acids results from the suppression of directional changes which occur spontaneously in isotropic solutions.
Journal ArticleDOI
Flagellar rotation and the mechanism of bacterial motility.
TL;DR: BACTERIAL flagella are generally composed of three morphologically distinguishable regions: the long flagellar filament, the hook, and the basal structure which is composed of an intricate set of disks and rods attaching the hook to the cell membrane and cell wall.
Journal ArticleDOI
An Ultrasensitive Bacterial Motor Revealed by Monitoring Signaling Proteins in Single Cells
TL;DR: M Motors from different bacteria exhibited an identical steep input-output relation, suggesting that they actively contribute to signal amplification in chemotaxis, and can be extended to quantitative in vivo studies of other biochemical networks.
Journal ArticleDOI
Temporal comparisons in bacterial chemotaxis.
TL;DR: Responses of tethered cells of Escherichia coli to impulse, step, exponential-ramp or exponentiated sine-wave stimuli are internally consistent, provided that allowance is made for the nonlinear effect of thresholds.