Magnetosome formation in prokaryotes
نویسندگان
چکیده
منابع مشابه
Molecular mechanisms of magnetosome formation.
Magnetotactic 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. Because of the special properties of these magnetic crystals,...
متن کاملGenetics and cell biology of magnetosome formation in magnetotactic bacteria.
The ability of magnetotactic bacteria (MTB) to orient in magnetic fields is based on the synthesis of magnetosomes, which are unique prokaryotic organelles comprising membrane-enveloped, nano-sized crystals of a magnetic iron mineral that are aligned in well-ordered intracellular chains. Magnetosome crystals have species-specific morphologies, sizes, and arrangements. The magnetosome membrane, ...
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Bacterial magnetosomes, because of their nano-scale size, have a large surface-to-volume ratio and are able to carry large quantities of bioactive substances such as enzymes, antibodies, and genes. Gangliosides, a family of sialic acid-containing glycosphingolipids, function as distinctive cell surface markers and as specific determinants in cellular recognition and cell-to-cell communication. ...
متن کاملGenomics, genetics, and cell biology of magnetosome formation.
Magnetosomes are specialized organelles for magnetic navigation that comprise membrane-enveloped, nano-sized crystals of a magnetic iron mineral; they are formed by a diverse group of magnetotactic bacteria (MTB). The synthesis of magnetosomes involves strict genetic control over intracellular differentiation, biomineralization, and their assembly into highly ordered chains. Physicochemical con...
متن کاملMagnetosome Mysteries
Aquatic, motile bacteria that orient and rate along geomagnetic field Iines,known as gnetotactic bacteria, were discovered three de cades ago by Richard P. Blakemore, then a uate student at the University of Massachusetts at Amherst, Initially considered a mere osity, these bacteria have gained celebrity tus as well as deeper respect among scientists, engineers, and the general public. Thus, ma...
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ژورنال
عنوان ژورنال: Nature Reviews Microbiology
سال: 2004
ISSN: 1740-1526,1740-1534
DOI: 10.1038/nrmicro842