Magnetotactic Bacteria

Introduction to Magnetotactic Bacteria

Electron micrograph of Magnetospirillum gryphiswaldense cells containing chains of magnetite crystals (top) and magnified section of crystal chain (bottom). By Caulobacter subvibrioides (Diskussion) GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons

Magnetospirillum gryphiswaldense (also referred to as MSR-1) is a gram negative magnetotactic bacteria that is found in shallow fresh water and sediment. They are characterized by a spirillial morphology with flagella at each end of the cell. They are able to orient themselves based on Earth’s magnetic field (magnetotaxis) due to special organelles called magnetosomes.

Other examples:
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Subscript: H₂O
Superscript: Fe³⁺

Magnetosome Formation

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Genetic Influences

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Potential Uses in Bioremediation

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Conclusion

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References

[1] Blakemore, R. (1975). Magnetotactic bacteria. Science (New York, N.Y.), 190(4212), 377-379.

[2] Simmons, S. L., Sievert, S. M., Frankel, R. B., Bazylinski, D. A., & Edwards, K. J. (2004). Spatiotemporal distribution of marine magnetotactic bacteria in a seasonally stratified coastal salt pond. Applied and Environmental Microbiology, 70(10), 6230-6239.

[3] Komeili, A. (2012). Molecular mechanisms of compartmentalization and biomineralization in magnetotactic bacteria. FEMS Microbiology Reviews, 36(1), 232-255.

[] Bazylinski, D. A., & Schübbe, S. (2007). Controlled biomineralization by and applications of magnetotactic bacteria. Advances in applied microbiology, 62, 21-62.