Results 171 to 180 of about 3,992 (192)
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PROTEOMICS, 2006
AbstractProkaryotes are known to have evolved one or more unique organelles. Although several hypotheses have been proposed concerning the biogenesis of these intracellular components, the majority of these proposals remains unclear. Magnetotactic bacteria synthesize intracellular magnetosomes that are enclosed by lipid bilayer membranes.
Tanaka, M. +5 more
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AbstractProkaryotes are known to have evolved one or more unique organelles. Although several hypotheses have been proposed concerning the biogenesis of these intracellular components, the majority of these proposals remains unclear. Magnetotactic bacteria synthesize intracellular magnetosomes that are enclosed by lipid bilayer membranes.
Tanaka, M. +5 more
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Molecular Mechanisms of Magnetosome Formation
Annual Review of Biochemistry, 2007Magnetotactic bacteria are a diverse group of microorganisms with the ability to use geomagnetic fields for direction sensing. This unique feat is accomplished with the help of magnetosomes, nanometer-sized magnetic crystals surrounded by a lipid bilayer membrane and organized into chains via a dedicated cytoskeleton within the cell.
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Synthesis of magnetosome chain-like structures
Nanotechnology, 2008Magnetite chains with a number of magnetite particles arranged in a line parallel to the outer amorphous carbon coating have been prepared. The sizes of the nanoparticles range from 40 to 120 nm, with nearly identical gaps between every two adjacent particles.
Yeru, Liu, Qianwang, Chen
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Free Radical Biology and Medicine, 2020
Magnetospirillum gryphiswaldense MSR-1 uses chains of magnetosomes, membrane-enveloped magnetite (Fe(II)Fe(III)2O4) nanocrystals, to align along magnetic field. The process of magnetosome biomineralization requires a precise biological control of redox conditions to maintain a balanced amounts of ferric and ferrous iron.
Wei, Niu +6 more
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Magnetospirillum gryphiswaldense MSR-1 uses chains of magnetosomes, membrane-enveloped magnetite (Fe(II)Fe(III)2O4) nanocrystals, to align along magnetic field. The process of magnetosome biomineralization requires a precise biological control of redox conditions to maintain a balanced amounts of ferric and ferrous iron.
Wei, Niu +6 more
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Magnetosomes in magnetotactic bacteria
2006The ability of magnetotactic bacteria (MTB) to orient and migrate along magnetic field lines is basedon magnetosomes, which are membrane-enclosed intracellular crystals of a magnetic iron mineral. Thebiomineralization of magnetosomes is a process with genetic control over the accumulation of iron,the deposition of the magnetic crystal within a specific
Scheffel, A., Schueler, D.
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Magnetotactic bacteria and magnetosomes – Scope and challenges
Materials Science and Engineering: C, 2016Geomagnetism aided navigation has been demonstrated by certain organisms which allows them to identify a particular location using magnetic field. This attractive technique to recognize the course was earlier exhibited in numerous animals, for example, birds, insects, reptiles, fishes and mammals.
Jobin John, Jacob, K, Suthindhiran
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Magnetotactic Bacteria, Magnetosomes, and Nanotechnology
2014Magnetotactic bacteria are motile, mostly aquatic, ubiquitous prokaryotes whose direction of swimming is profoundly influenced by the Earth’s and other magnetic fields. These microorganisms biomineralize magnetosomes which are intracellular, tens of nanometer sized, membrane-bounded magnetic crystals of the minerals magnetite (Fe3O4) and greigite ...
Dennis A. Bazylinski +2 more
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Magnetosome chain superstructure in uncultured magnetotactic bacteria
Physical Biology, 2010Magnetotactic bacteria produce magnetosomes, which are magnetic particles enveloped by biological membranes, in a highly controlled mineralization process. Magnetosomes are used to navigate in magnetic fields by a phenomenon called magnetotaxis. Two levels of organization and control are recognized in magnetosomes.
Leida G, Abraçado +5 more
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Genetic Analysis of Magnetosome Biomineralization
2006Magnetite crystals produced by magnetotactic bacteria (MTB) have uniform species–specific morphologies and sizes, which are mostly unknown from inorganic systems. This indicates that biomineralization in magnetosomes is a process with genetic control over the accumulation of iron, the deposition of the magnetic crystal within a specific compartment, as
Christian Jogler, Dirk Schüler
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