magnetosomes


Also found in: Encyclopedia.

magnetosomes

magnetic mineral particles, often MAGNETITE, encased in membranes, present in cells that exhibit MAGNETOTAXIS, for example magnetotactic bacteria.
Mentioned in ?
References in periodicals archive ?
These magnetic particles, known as magnetosomes, help bacteria orient themselves and find their preferred environments.
Objective: Magnetotactic bacteria (mtb) produce highly organized chains of magnetite nanoparticles within intracellular membranes called magnetosomes. The alignment of these magnetic nanoparticles endows the bacteria with a substantial magnetic dipole, Which it can use in relation to the earths magnetic field to navigate its environment.
Staniland, "Magnetosomes: bacterial biosynthesis of magnetic nanoparticles and potential biomedical applications," in Nanotechnologies for the Life Sciences, Wiley-VCH Verlag GmbH & Co.
Recently, researchers have devoted their attention to a class of iron oxide MNPs naturally produced by magnetotactic bacteria, named magnetosomes (MNs) [13-15].
Using a powerful magnetic field, the same as in the MRI technique (magnetic resonance imaging), it would be possible to direct bacteria containing magnetosomes to the site of the tumor.
Skumiel et al., "Energy losses in mechanically modified bacterial magnetosomes," Journal of Physics D: Applied Physics, vol.
Due to versatile intrinsic properties, MNPs including magnetosomes have promoted challenging innovations in biomedical application through their interplay with various magnetic fields.
Having magnetosomes (organelles which contain magnetite crystals surrounded by membrane), which are organized into chains and help to orient in geomagnetic field, is also typical of them [18].
Migratory birds, insects, protists and magneto-tactics bacteria have plenty identified biophysical mechanisms of magneto-perception, as magnetosomes, paramagnetic nanoparticles and some pigments (Galland & Pazur, 2005; Lohman & Johnsen, 2000).
Thanks to that, cells can create less magnetosomes to achieve the same orientation energy (Thomas-Kerpta et al., 2000).
A characteristic of all MTB is the presence of magnetosomes in them.