Results 41 to 50 of about 1,750 (188)
Quantifying the Magnetic Advantage in Magnetotaxis [PDF]
Biophysical Journal, 2006 Magnetotactic bacteria are characterized by the production of magnetosomes, nanoscale particles of lipid bilayer encapsulated magnetite, that act to orient the bacteria in magnetic fields. These magnetosomes allow magneto-aerotaxis, which is the motion of the bacteria along a magnetic field and toward preferred concentrations of oxygen.
Smith, M.J. +6 more
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Crystal habits and magnetic microstructures of magnetosomes in coccoid magnetotactic bacteria
Anais da Academia Brasileira de Ciências, 2006 We report on the application of off-axis electron holography and high-resolution TEM to study the crystal habits of magnetosomes and magnetic microstructure in two coccoid morphotypes of magnetotactic bacteria collected from a brackish lagoon at Itaipu ...
Ulysses Lins +4 more
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Frontiers in Molecular Biosciences, 2015 Magnetotactic bacteria (MTB) are a diverse group of aquatic bacteria that have the magnetotaxis ability to align themselves along the geomagnetic field lines and to navigate to a microoxic zone at the bottom of chemically stratified natural water.
Geula eDavidov +6 more
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Survey of Magneto-tactic Properties of Escherichia coli Under Static Magnetic Fields [PDF]
Avicenna Journal of Environmental Health Engineering, 2020 Some of the microorganisms such as Escherichia coli have the ability to migrate to areas in which the intensity of magnetic fields (MFs) is higher, which is called magnetotactic properties.
Ghorban Asgari +2 more
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The identification and biogeochemical interpretation of fossil magnetotactic bacteria [PDF]
, 2008 Magnetotactic bacteria, which most commonly live within the oxic-anoxic transition zone (OATZ) of aquatic environments, produce intracellular crystals of magnetic minerals, specifically magnetite or greigite.
Kirschvink, Joseph L., Kopp, Robert E.
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Magneto-chemotaxis in sediment: first insights. [PDF]
PLoS ONE, 2014 Magnetotactic bacteria (MTB) use passive alignment with the Earth magnetic field as a mean to increase their navigation efficiency in horizontally stratified environments through what is known as magneto-aerotaxis (M-A).
Xuegang Mao +4 more
doaj +1 more source
Frozen by Heating: Temperature Controlled Dynamic States in Droplet Microswimmers. [PDF]
Adv MaterIn the design of smart materials based on active agents or microswimmers, the gaits or motile states of the agents are to be controlled, preferably by external parameters that do not require modifying the composition of the system. A facile, universal parameter is temperature.
Ramesh P +5 more
europepmc +2 more sources
Magnetite and magnetotaxis in microorganisms
Bioelectromagnetics, 1988 AbstractMagnetotactic bacteria from freshwater and marine sediments orient and navigate along geomagnetic field lines. Their magnetotactic response is based on intracellular, single magnetic domains of ferrimagnetic magnetite, which impart a permanent magnetic dipole moment to the cell.
Frankel, Richard B., Blakemore, R. P.
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mBio, 2019 Magnetotactic bacteria (MTB) are of special scientific interest due to the formation of magnetosomes, intracellular membrane-enveloped magnetite crystals arranged into a linear chain by a dedicated cytoskeleton.
Daniel Pfeiffer +4 more
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Non-Skeletal Biomineralization by Eukaryotes: Matters of Moment and Gravity [PDF]
, 2010 Skeletal biomineralisation by microbial eukaryotes significantly affects the global biogeochemical cycles of carbon, silicon and calcium. Non-skeletal biomineralisation by eukaryotic cells, with precipitates retained within the cell interior, can ...
Knoll, Andrew Herbert, Raven, John A.
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