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Book Chapter

Magnetosomes of magnetotactic bacteria

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Scheffel,  André
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Schüler,  Dirk
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Citation

Scheffel, A., & Schüler, D. (2006). Magnetosomes of magnetotactic bacteria. In J. M. Shively (Ed.), Inclusions in Prokaryotes (pp. 167-192). Heidelberg: Springer.


Cite as: https://hdl.handle.net/21.11116/0000-0001-CFCF-E
Abstract
The ability of magnetotactic bacteria (MTB) to orient and migrate along magnetic field lines is basedon magnetosomes, which are membrane-enclosed intracellular crystals of a magnetic iron mineral. Thebiomineralization of magnetosomes is a process with genetic control over the accumulation of iron,the deposition of the magnetic crystal within a specific compartment, as well as their intracellularassembly and alignment into chain-like structures. Magnetite crystals produced by MTB have uniform species-specificmorphologies and sizes, which are mostly unknown from inorganic systems. In addition, magnetosome chainformation is an example of the highest structural level achievable in a prokaryotic cell. In thiswork, we give an overview of the biology of MTB and the structure and functions of bacterial magnetosomes.In addition we summarize the current knowledge of the physico-chemical and molecular genetic basis of magnetosomebiomineralization and chain formation.