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Copper Association With Iron Sulfide Magnetosomes In A Magnetotactic Bacterium, Dennis A. Bazylinski, Anthony J. Garratt-Reed, Afshin Abedi, Richard B. Frankel
Copper Association With Iron Sulfide Magnetosomes In A Magnetotactic Bacterium, Dennis A. Bazylinski, Anthony J. Garratt-Reed, Afshin Abedi, Richard B. Frankel
Physics
Greigite (Fe3S4) and pyrite (FeS2) particles in the magnetosomes of a many-celled, magnetotactic prokaryote (MMP), common in brackish-to-marine, sulfidic, aquatic habitats, contained relatively high concentrations of copper which ranged from about 0.1 to 10 atomic per cent relative to iron. In contrast, the greigite particles in the magnetosomes of a curved magnetotactic bacterium collected from the same sampling site did not contain significant levels of copper. The ability of the MMP to biomineralize copper within its magnetosomes appeared to be limited to that organism and dependent upon the site from which it was collected. …