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magnetosomes

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Journal Article
Published: 01 February 2008
American Mineralogist (2008) 93 (2-3): 463–469.
...Damien Faivre; Nicolas Menguy; Mihály Pósfai; Dirk Schüler Abstract Magnetotactic bacteria are known to mediate the formation of intracellular magnetic nanoparticles in organelles called magnetosomes. These magnetite crystals are formed through a process called biologically controlled...
FIGURES | View All (5)
Journal Article
Published: 01 August 2014
European Journal of Mineralogy (2014) 26 (4): 457–471.
... bacterium, Magnetospirillum gryphiswaldense strain MSR-1 were grown in the presence of manganese, ruthenium, zinc and vanadium, of which only manganese was incorporated within the magnetosome magnetite crystals. We demonstrate that the magnetic properties of magnetite crystals of magnetotactic bacteria can...
FIGURES | View All (6)
Image
Model for <span class="search-highlight">magnetosome</span> formation and iron biomineralization in magnetotactic...
Published: 01 August 2023
Figure 4. Model for magnetosome formation and iron biomineralization in magnetotactic bacteria. First, magnetosome vesicles invaginate from the inner cell membrane. Second, vesicles are arranged in chains and magnetite nucleates in empty magnetosomes. Iron is incorporated as reduced (Fe(II
Image
Magnetic states of magnetofossils visualized with electron holography. Colo...
Published: 01 August 2023
Figure 2. Magnetic states of magnetofossils visualized with electron holography. Colors indicate the direction of flux line inside the magnetosomes (see color wheel on the left). ( A ) Single-domain (SD) state of an isolated magnetosomal magnetite particle. ( B ) Two double chains of prismatic
Image
Electron microscopy images of multicellular magnetotactic prokaryotes (MMPs...
Published: 01 August 2023
arrowheads point the flagella). ( B ) SEM image of an MMP observed at high voltage (15.00 kV), using a backscattered electron detector, showing discontinuous aligned magnetosome chains inside the cells (white structures). ( C ) Transmission electron microscopy (TEM) image of an MMP showing the abundance
Image
Examples of comparisons between the projected shapes of <span class="search-highlight">magnetosomes</span>, as ob...
Published: 01 February 2008
F igure 3. Examples of comparisons between the projected shapes of magnetosomes, as observed in HRTEM images, and morphological models that consist of various expressions of the {111}, {100}, and {110} forms. The models are shown in the same orientation as the corresponding magnetosomes
Image
Examples of comparisons between the projected shapes of <span class="search-highlight">magnetosomes</span>, as ob...
Published: 01 February 2008
F igure 3. Examples of comparisons between the projected shapes of magnetosomes, as observed in HRTEM images, and morphological models that consist of various expressions of the {111}, {100}, and {110} forms. The models are shown in the same orientation as the corresponding magnetosomes
Image
Electron holography of a magnetotactic bacterium showing magnetic field lin...
Published: 03 January 2003
Figure 5. Electron holography of a magnetotactic bacterium showing magnetic field lines associated with the magnetosomes. ( top ) transmission electron micrograph of an unstained cell of Magnetospirillum magnetotacticum showing chain of magnetite magnetosomes. ( bottom ) Magnetic field lines
Image
Transmission electron micrograph of a thin-section of several magnetite mag...
Published: 03 January 2003
Figure 7. Transmission electron micrograph of a thin-section of several magnetite magnetosomes within a lysing cell of the marine coccus strain MC-1. Arrows denote the electron-dense magnetosome membrane surrounding each crystal. Note that magnetosome membrane is adjacent to cytoplasmic membrane.
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Features of cells and <span class="search-highlight">magnetosomes</span> produced by cells of  Magnetospirillum g...
Published: 01 August 2014
Table 1 Features of cells and magnetosomes produced by cells of Magnetospirillum gryphiswaldense strain MSR-1 grown with 50 μM ferric citrate and 50 μM of an addition metal. Cells for the inoculum for all cultures were pregrown in medium lacking the major source of iron, ferric citrate
Image
Transmission electron micrographs obtained with high-angle annular dark-fie...
Published: 01 August 2014
Fig. 1 Transmission electron micrographs obtained with high-angle annular dark-field detector (HAADF) and EDS spectra for (a) magnetite-containing magnetosomes from lysed cells of Magnetospirillum gryphiswaldense strain MSR-1 grown in the presence of 50 μM MnCl 2 and 50 μM ferric citrate
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Contoured image derived from the difference in holographic phase images of ...
Published: 01 July 2001
Fig. 4. Contoured image derived from the difference in holographic phase images of Itaipu 1 magnetosomes after application of applied fields as indicated by double-headed arrow. The density of flux lines for smaller Itaipu 3 magnetosomes indicates magnetic reversal for these crystals. See text
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Transmission electron micrograph of: (a) purified magnetite <span class="search-highlight">magnetosomes</span> re...
Published: 03 January 2003
Figure 8. Transmission electron micrograph of: (a) purified magnetite magnetosomes released from cells of strain MV-1 negatively stained with 0.5% uranyl acetate; “halo” around crystals represents magnetosome membrane while material at arrows might indicate additional membranes holding chains
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Transmission electron microscopy (TEM) observations of magnetite grains in ...
Published: 03 January 2020
Figure 1. Transmission electron microscopy (TEM) observations of magnetite grains in a magnetosome chain from hydrogenetic ferromanganese crust sample SCS-02 (A, South China Sea, 15°09′N, 117°23′E, water depth 2430 m) and a single magnetite magnetosome from sample PO-01 (D, Pacific Ocean 20°19′N