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Bacteria magnetotactic

Assimilatory Fe metabolism Fe biomolecules (siderophores, ferritin) magnetite (magnetotactic bacteria). [Pg.362]

Frankel RB, Blakemore RP, Wolfe RS (1979) Magnetite in freshwater magnetotactic bacteria. Science 203 1355-1356... [Pg.404]

Frankel RB, Blakemore RP, Torres de Araujo FF, Esquivel DMS, Danon J (1981) Magnetotactic bacteria at the geomagnetic equator. Science 212 1269-1270... [Pg.404]

Mandemack KW, Bazylinski DA, Shanks III WC, Bullen TD (1999) Oxygen and iron isotope studies of magnetite produced by magnetotactic bacteria. Science 285 1892-189 Mann S, Sparks NHC, Couling SB, Larcombe MC, Franke RB (1989) Crystallochemical characterization of magnetite spinels prepared from aqueous solution. J Chem Soc Far Trans 85 3033-3044 Matthews A, Zhu XK, O Nions K (2001) Kinetic iron stable isotope fractionation between iron (-II) and (-III) complexes in solution. Earth Planet Sci Lett 192 81-92... [Pg.406]

H. Lee, A. M. Purdon, V. Chu, and R. M. Westervelt, Controlled assembly of magnetic nanoparticles from magnetotactic bacteria using microelectromagnets arrays, Nano Lett. 4(5), 995-998 (2004). [Pg.38]

Fig. 7.14 Normalized decrease of the magnetization for magnetites of different origin. Whole cells refer to magnetotactic bacteria, extracted to biogenic magnetite extracted form these. The number indicates the size of synthetic magnetite crystals in nm (modified from Moskovitz etal., 1993, with permission). Fig. 7.14 Normalized decrease of the magnetization for magnetites of different origin. Whole cells refer to magnetotactic bacteria, extracted to biogenic magnetite extracted form these. The number indicates the size of synthetic magnetite crystals in nm (modified from Moskovitz etal., 1993, with permission).
Deep sea sediments may contain magnetite which may be not only of detrital origin, but may also contain a contribution from former magnetotactic bacteria. Petersen et al. (1986) have identified single-domain, magnetite crystals in Eocene to Quaternary sediments from the South Atlantic, which are very similar to biomagnetite in recent marine bacteria (see Chap. 17). [Pg.420]

Fig. 17.5 Shapes and intracellular arrangement of magneto-somes in various magnetotactic bacteria cubooctahedral (a), bullet-shaped (b,c), prismatic (d-k) and rectangular (I) magnetites arranged mostly in one or multiple chains, (Bar = 0.1 pm). (Schuler, 1999 with permission). Fig. 17.5 Shapes and intracellular arrangement of magneto-somes in various magnetotactic bacteria cubooctahedral (a), bullet-shaped (b,c), prismatic (d-k) and rectangular (I) magnetites arranged mostly in one or multiple chains, (Bar = 0.1 pm). (Schuler, 1999 with permission).
Frankel, R.B. Papaefthymiou, C. Blakemore, R.P. O Brien,W.D. (1983) Fe304 precipitation in magnetotactic bacteria. Biochim. Bio-phys. Acta 763 147-159... [Pg.581]

Schuler D. (1999) Formation of magnetosomes in magnetotactic bacteria. J. Molec. Microbiol. BioTechn. 1 79-86 Schuler D. (2000) Characterization of magneto-some membrane in Magnetospirillum gryphiswaldense. In Bauerlein, E. (ed.) Biomineralization, 109-118... [Pg.624]

Stolz, J.E. Chang, S.R. Kirschvink, J.L (1986) Magnetotactic bacteria and single-domain magnetite in hemipelagic sediments. Nature 321 849-851... [Pg.631]

Unilamellar vesicles have been used as a reactor for the synthesis of nanos-meter-scale magnetic particles (13,14). By adding alkaline solution to vesicles containing intravesicular solutions of Fe2+ and Fe3+, the Fe /Fe resulted in the formation of membrane-bound discrete particles of different ion oxide particles. These results together with the particle formation in microemulsion are not only of interest in colloid chemistry but also have significance in mineralization in biosystems, such as magnetotactic bacteria, where particles are formed within enclosed organic compartments. [Pg.666]

Composite Magnetic Particles and Magnetic Particles in Magnetotactic Bacteria... [Pg.674]

Magnetite magnetotactic bacteria, tuna, salmon, pigeons Calcite mammals, fish Gypsum j ellyfish Barite chart... [Pg.262]

Fig. 5. Electron micrograph of particle chain in magnetotactic bacteria. The bar = 500 nm [66] (photo credit Gorby Y, Blakemore R, Microbiology Department, University of New Hampshire)... Fig. 5. Electron micrograph of particle chain in magnetotactic bacteria. The bar = 500 nm [66] (photo credit Gorby Y, Blakemore R, Microbiology Department, University of New Hampshire)...
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