BioTech Encyclopedia ⌂ Home

Bacterial chemotaxis

Experiments: basic research on living systems, not technology.

Also: E. coli swimming, run and tumble

Bacteria steer toward food by swimming in runs and randomly tumbling, a simple strategy for navigation.

Known properties: Bacterial chemotaxis

Only what the cited papers report.

  • E. coli moves toward amino acids by suppressing its spontaneous changes of direction. doi:10.1038/239500a0

Patents

Search Google Patents for this topic: all patents · recent applications (2022+)

Patent searches are generated from the topic's key terms; a patent is a legal claim, not proof that something works. See the Patents page.

Timeline

  1. 1966 Bacteria swim toward food
  2. 1972 Tracking bacteria in 3D
  3. 2005 Steps in the flagellar motor
  4. 2007 Seeing receptor arrays in whole cells

Readiness: lab lab studies · prototype demonstrated objects · commercial products or buildings in real use · review summaries of other studies.
Export this topic's references: BibTeX · RIS (Zotero, EndNote, Mendeley)

Filter:

biology

lab biology 1972

Tracking bacteria in 3D

Berg and Brown analysed E. coli chemotaxis by tracking individual bacteria in three dimensions.

As reported in: BERG, BROWN (1972). Chemotaxis in Escherichia coli analysed by Three-dimensional Tracking. Nature. doi:10.1038/239500a0

Abstract only

lab biology 1966

Bacteria swim toward food

Adler showed E. coli in a capillary tube form visible migrating bands, moving toward oxygen and energy sources such as galactose, glucose and serine.

As reported in: Adler (1966). Chemotaxis in Bacteria. Science. doi:10.1126/science.153.3737.708

Abstract only

lab biology 2007

Seeing receptor arrays in whole cells

Zhang and colleagues used cryo-electron tomography to image chemoreceptor arrays in intact E. coli; forming arrays required the proteins CheA and CheW.

As reported in: Zhang, Khursigara, Hartnell et al. (2007). Direct visualization of Escherichia coli chemotaxis receptor arrays using cryo-electron microscopy. Proceedings of the National Academy of Sciences. doi:10.1073/pnas.0610106104

Read free · preprint / author manuscript

biophysics

lab biophysics 2005

Steps in the flagellar motor

Sowa and colleagues directly observed the bacterial flagellar motor rotating in discrete steps, using a sodium-driven motor in E. coli.

As reported in: Sowa, Rowe, Leake et al. (2005). Direct observation of steps in rotation of the bacterial flagellar motor. Nature. doi:10.1038/nature04003

Abstract only