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42
work were purchased from Thermo Electron, Germany. The
"... 1 were produced in the magnetotactic bacteria Magnetospirillum gryphiswaldense [1]. Various batches of MPs were used for stoichiometric determination experiments. TEM-analyses of the MPs revealed particle diameters of 36 ± 2 nm. The concentrations of MPs in HEPES buffer (10 mM HEPES, 1 mM EDTA, pH 7 ..."
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1 were produced in the magnetotactic bacteria Magnetospirillum gryphiswaldense [1]. Various batches of MPs were used for stoichiometric determination experiments. TEM-analyses of the MPs revealed particle diameters of 36 ± 2 nm. The concentrations of MPs in HEPES buffer (10 mM HEPES, 1 mM EDTA, p
Effect of Magnetospirillum gryphiswaldense on serum iron levels in mice
, 2012
"... Background and Objectives: The Magnetotactic bacterium Magnetospirillum gryphiswaldense (MSR-1) mineralizes the magnetite (Fe3 O4) crystals and organizes a highly ordered intracellular structure, called the magnetosome. Iron transport system supports the biogenesis of magnetite. Although iron is an ..."
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Background and Objectives: The Magnetotactic bacterium Magnetospirillum gryphiswaldense (MSR-1) mineralizes the magnetite (Fe3 O4) crystals and organizes a highly ordered intracellular structure, called the magnetosome. Iron transport system supports the biogenesis of magnetite. Although iron
Characterization of a Spontaneous Nonmagnetic Mutant of Magnetospirillum gryphiswaldense Reveals a Large Deletion Comprising a Putative Magnetosome Island
, 2003
"... Frequent spontaneous loss of the magnetic phenotype was observed in stationary-phase cultures of the magnetotactic bacterium Magnetospirillum gryphiswaldense MSR-1. A nonmagnetic mutant, designated strain MSR-1B, was isolated and characterized. The mutant lacked any structures resembling magnetosome ..."
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Frequent spontaneous loss of the magnetic phenotype was observed in stationary-phase cultures of the magnetotactic bacterium Magnetospirillum gryphiswaldense MSR-1. A nonmagnetic mutant, designated strain MSR-1B, was isolated and characterized. The mutant lacked any structures resembling
Schüler D: The major magnetosome proteins MamGFDC are not essential for magnetite biomineralization in Magnetospirillum gryphiswaldense but regulate the size of magnetosome crystals
- J Bacteriol
"... Magnetospirillum gryphiswaldense and related magnetotactic bacteria form magnetosomes, which are membrane-enclosed organelles containing crystals of magnetite (Fe 3O 4) that cause the cells to orient in magnetic fields. The characteristic sizes, morphologies, and patterns of alignment of magnetite c ..."
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Cited by 8 (0 self)
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Magnetospirillum gryphiswaldense and related magnetotactic bacteria form magnetosomes, which are membrane-enclosed organelles containing crystals of magnetite (Fe 3O 4) that cause the cells to orient in magnetic fields. The characteristic sizes, morphologies, and patterns of alignment of magnetite
Functional Analysis of the Magnetosome Island in Magnetospirillum gryphiswaldense: The mamAB Operon Is Sufficient for Magnetite Biomineralization
"... Bacterial magnetosomes are membrane-enveloped, nanometer-sized crystals of magnetite, which serve for magnetotactic navigation. All genes implicated in the synthesis of these organelles are located in a conserved genomic magnetosome island (MAI). We performed a comprehensive bioinformatic, proteomic ..."
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Cited by 9 (1 self)
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, proteomic and genetic analysis of the MAI in Magnetospirillum gryphiswaldense. By the construction of large deletion mutants we demonstrate that the entire region is dispensable for growth, and the majority of MAI genes have no detectable function in magnetosome formation and could be eliminated without any
The Terminal Oxidase cbb3 Functions in Redox Control of Magnetite Biomineralization in Magnetospirillum gryphiswaldense
"... The biomineralization of magnetosomes inMagnetospirillum gryphiswaldense and other magnetotactic bacteria occurs only under suboxic conditions. However, the mechanism of oxygen regulation and redox control of biosynthesis of the mixed-valence iron oxide magnetite [FeII(FeIII)2O4] is still unclear. H ..."
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Cited by 1 (0 self)
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The biomineralization of magnetosomes inMagnetospirillum gryphiswaldense and other magnetotactic bacteria occurs only under suboxic conditions. However, the mechanism of oxygen regulation and redox control of biosynthesis of the mixed-valence iron oxide magnetite [FeII(FeIII)2O4] is still unclear
Dynamics of Magnetotactic Bacteria in a Rotating Magnetic Field
"... ABSTRACT The dynamics of the motile magnetotactic bacterium Magnetospirillum gryphiswaldense in a rotating magnetic field is investigated experimentally and analyzed by a theoretical model. These elongated bacteria are propelled by single flagella at each bacterial end and contain a magnetic filamen ..."
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ABSTRACT The dynamics of the motile magnetotactic bacterium Magnetospirillum gryphiswaldense in a rotating magnetic field is investigated experimentally and analyzed by a theoretical model. These elongated bacteria are propelled by single flagella at each bacterial end and contain a magnetic
Deletion of a fur-Like Gene Affects Iron Homeostasis and Magnetosome Formation in Magnetospirillum gryphiswaldense†
, 2010
"... Magnetotactic bacteria synthesize specific organelles, the magnetosomes, which are membrane-enveloped crystals of the magnetic mineral magnetite (Fe3O4). The biomineralization of magnetite involves the uptake and intracellular accumulation of large amounts of iron. However, it is not clear how iron ..."
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Magnetotactic bacteria synthesize specific organelles, the magnetosomes, which are membrane-enveloped crystals of the magnetic mineral magnetite (Fe3O4). The biomineralization of magnetite involves the uptake and intracellular accumulation of large amounts of iron. However, it is not clear how iron
FeoB2 Functions in Magnetosome Formation and Oxidative Stress Protection in Magnetospirillum gryphiswaldense Strain MSR-1
"... Magnetotactic bacteria (MTB) synthesize unique organelles, themagnetosomes, which are intracellular nanometer-sized,membrane-envelopedmagnetite. The biomineralization ofmagnetosomes involves the uptake of large amounts of iron.However, the ironmetab-olismofMTB is not well understood. The genome of t ..."
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Magnetotactic bacteria (MTB) synthesize unique organelles, themagnetosomes, which are intracellular nanometer-sized,membrane-envelopedmagnetite. The biomineralization ofmagnetosomes involves the uptake of large amounts of iron.However, the ironmetab-olismofMTB is not well understood. The genome
Morphological Changes in Magnetotactic Bacteria in Presence of Magnetic Fields
"... Nanomagnets manufactured by magnetotactic bacteria hold immense promise in magnetically directed drug delivery. In spite of discovery of these bacteria nearly three decades ago, it is not known how the bacteria are able to keep the nanomagnets trapped inside biological membranes (vesicles called mag ..."
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Cited by 3 (2 self)
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Nanomagnets manufactured by magnetotactic bacteria hold immense promise in magnetically directed drug delivery. In spite of discovery of these bacteria nearly three decades ago, it is not known how the bacteria are able to keep the nanomagnets trapped inside biological membranes (vesicles called
Results 1 - 10
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