Results 171 to 180 of about 4,742 (185)
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Magnetic guidance of the magnetotactic bacterium Magnetospirillum gryphiswaldense
Soft Matter, 2016Magnetospirillum gryphiswaldense is a magnetotactic bacterium with a permanent magnetic moment capable of swimming using two bipolarly located flagella. In their natural environment these bacteria swim along the field lines of the homogeneous geomagnetic field in a typical run and reversal pattern and thereby create non-differentiable trajectories with
Johannes, Loehr +3 more
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Ligand Binding to Chlorite Dismutase from Magnetospirillum sp.
The Journal of Physical Chemistry B, 2015Chlorite dismutase (Cld) catalyzes the reduction of chlorite to chloride and dioxygen. Here, the ligand binding to Cld of Magnetospirillum sp. (MaCld) is investigated with X-ray crystallography and electron paramagnetic resonance (EPR). EPR reveals a large heterogeneity in the structure of wild-type MaCld, showing a variety of low- and high-spin ferric
Amy De Schutter +7 more
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Development of a genetic system for Magnetospirillum gryphiswaldense
Archives of Microbiology, 2003Genetic analysis of bacterial magnetosome biomineralization has been hindered by the lack of an appropriate methodology for cultivation and genetic manipulation of most magnetotactic bacteria. In this report, a genetic system for Magnetospirillum gryphiswaldense is described. The system includes a plating technique that allows the screening of magnetic
Schultheiss, D., Schüler, D.
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Isolation and characterization of Magnetospirillum from saline lagoon
World Journal of Microbiology and Biotechnology, 2016Magnetotactic bacteria (MTB) are aquatic prokaryotes that orient themselves to earth's magnetic field with the help of intracellular organelle magnetosomes. Although many species of MTB have been identified, the isolation of MTB is a challenging task due to the lack of systematic isolation procedure and/or commercial media.
T, Revathy +3 more
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Metamorphosis of Magnetospirillum magneticum AMB-1 cells
Chinese Journal of Oceanology and Limnology, 2010Magnetospirillum magneticum strain AMB-1 belongs to the family of magnetotactic bacteria. It possesses a magnetosome chain aligning, with the assistance of cytoskeleton filaments MamK, along the long axis of the spiral cells. Most fresh M. magneticum AMB-1 cells exhibit spiral morphology. In addition, other cell shapes such as curved and spherical were
Fengli Zhang +5 more
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A Novel Ferric Reductase Purified from Magnetospirillum gryphiswaldense MSR-1
Current Microbiology, 2007A ferric reductase was purified into an electrophoretically homologous state from Magnetospirillum gryphiswaldense MSR-1 strain. The enzyme was found within the cytoplasm and associated with the cytoplasmic membrane. The molecular weight of the purified enzyme was calculated as 16.1 kDa using sodium dodecyl sulfate-polyacrylamide gel electrophoresis ...
Meng, Xia +3 more
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Catechol siderophore excretion by magnetotactic bacterium Magnetospirillum magneticum AMB-1
Journal of Bioscience and Bioengineering, 2006Siderophore activity was detected in the culture supernatant of the magnetotactic bacterium Magnetospirillum magneticum AMB-1. Here we report the first structural elucidation of a siderophore produced by a magnetotactic bacterium. The structure of the purified compound was 3,4-dihydroxybenzoic acid as determined by nuclear magnetic resonance (NMR) and ...
Ronie J, Calugay +6 more
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Iron-limited growth and kinetics of iron uptake in Magnetospirillum gryphiswaldense
Archives of Microbiology, 1996Growth and magnetite formation in Magnetospirillum gryphiswaldense MSR-1 were found close to the maximum at an extracellular iron concentration of 15-20 microM. Ferrous iron was incorporated by a slow, diffusion-like process. Several iron chelators including various microbial siderophores were unable to promote transport of iron into the cells.
D, Schüler, E, Baeuerlein
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ADVERSE EFFECTS OF MICROGRAVITY ON THE MAGNETOTACTIC BACTERIUM Magnetospirillum magnetotacticum
Acta Astronautica, 2000Bacteria that contain magnetosomes display magnetotaxis and align themselves to the earth's magnetic field. When magnetotactic bacteria were first isolated several decades ago it was presumed that geomagnetic orientation allowed magnetotactic bacteria to orient themselves downward towards sediments where the habitat is favorable to their growth and ...
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Magnetospirillum aberrantis sp. nov., a new freshwater bacterium with magnetic inclusions
Microbiology, 2011A new strain of spirilla, SpK, was isolated from the bottom sediments of Ol’khovka River near Kislovodsk (Caucasus). The bacteria (0.4 ±1.5 μm) were motile, with polar flagella. They grew within the temperature range from 20 to 45°C, with the optimum at 31°C. The pH growth optimum was at 6.5–6.9.
V M, Gorlenko +5 more
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