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Diffusive motions of the magnetosomes (enveloped Fe3O4 particles) in the magnetotactic bacterium Aquaspirillum magnetotacticum result in a very broad-line Mössbauer spectrum (T approximately 100 mm/s) above freezing temperatures. The line width increases with increasing temperature. The data are analyzed using a bounded diffusion model to yield the rotational and translational motions of the magnetosomes as well as the effective viscosity of the material surrounding the magnetosomes. The results are [theta 2] l/2 less than 1.5 degrees and [x2] 1/2 less than 8.4 A for the rotational and translational motions, respectively, implying that the particles are fixed in whole cells. The effective viscosity is 10 cP at 295 K and increases with decreasing temperature. Additional Fe3+ material in the cell is shown to be associated with the magnetosomes. Fe2+ material in the cell appears to be associated with the cell envelope.
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
September 2016,
Nature reviews. Microbiology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
January 2011,
Physical biology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
August 2005,
Applied and environmental microbiology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
November 2007,
Environmental microbiology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
August 2010,
Journal of basic microbiology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
January 2023,
National science review,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
July 2008,
FEMS microbiology reviews,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
August 2017,
Biophysical journal,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
December 2011,
Molecular microbiology,
S Ofer, and
I Nowik, and
E R Bauminger, and
G C Papaefthymiou, and
R B Frankel, and
R P Blakemore
September 2000,
Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada,
