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Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum
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| Zeitschriftentitel: | Journal of The Royal Society Interface |
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| Personen und Körperschaften: | , , , , , , , |
| In: | Journal of The Royal Society Interface, 12, 2015, 103, S. 20141288 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
The Royal Society
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| Schlagwörter: |
| author_facet |
Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin |
|---|---|
| author |
Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin |
| spellingShingle |
Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin Journal of The Royal Society Interface Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum Biomedical Engineering Biochemistry Biomaterials Bioengineering Biophysics Biotechnology |
| author_sort |
li, jinhua |
| spelling |
Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin 1742-5689 1742-5662 The Royal Society Biomedical Engineering Biochemistry Biomaterials Bioengineering Biophysics Biotechnology http://dx.doi.org/10.1098/rsif.2014.1288 <jats:p> Magnetotactic bacteria (MTB) are known to produce single-domain magnetite or greigite crystals within intracellular membrane organelles and to navigate along the Earth's magnetic field lines. MTB have been suggested as being one of the most ancient biomineralizing metabolisms on the Earth and they represent a fundamental model of intracellular biomineralization. Moreover, the determination of their specific crystallographic signature (e.g. structure and morphology) is essential for palaeoenvironmental and ancient-life studies. Yet, the mechanisms of MTB biomineralization remain poorly understood, although this process has been extensively studied in several cultured MTB strains in the <jats:italic>Proteobacteria</jats:italic> phylum. Here, we show a comprehensive transmission electron microscopy (TEM) study of magnetic and structural properties down to atomic scales on bullet-shaped magnetites produced by the uncultured strain MYR-1 belonging to the <jats:italic>Nitrospirae</jats:italic> phylum, a deeply branching phylogenetic MTB group. We observed a multiple-step crystal growth of MYR-1 magnetite: initial isotropic growth forming cubo-octahedral particles (less than approx. 40 nm), subsequent anisotropic growth and a systematic final elongation along [001] direction. During the crystal growth, one major {111} face is well developed and preserved at the larger basal end of the crystal. The basal {111} face appears to be terminated by a tetrahedral–octahedral-mixed iron surface, suggesting dimensional advantages for binding protein(s), which may template the crystallization of magnetite. This study offers new insights for understanding magnetite biomineralization within the <jats:italic>Nitrospirae</jats:italic> phylum. </jats:p> Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the <i>Nitrospirae</i> phylum Journal of The Royal Society Interface |
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| title |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_unstemmed |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_full |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_fullStr |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_full_unstemmed |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_short |
Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_sort |
crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the
<i>nitrospirae</i>
phylum |
| topic |
Biomedical Engineering Biochemistry Biomaterials Bioengineering Biophysics Biotechnology |
| url |
http://dx.doi.org/10.1098/rsif.2014.1288 |
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2015 |
| physical |
20141288 |
| description |
<jats:p>
Magnetotactic bacteria (MTB) are known to produce single-domain magnetite or greigite crystals within intracellular membrane organelles and to navigate along the Earth's magnetic field lines. MTB have been suggested as being one of the most ancient biomineralizing metabolisms on the Earth and they represent a fundamental model of intracellular biomineralization. Moreover, the determination of their specific crystallographic signature (e.g. structure and morphology) is essential for palaeoenvironmental and ancient-life studies. Yet, the mechanisms of MTB biomineralization remain poorly understood, although this process has been extensively studied in several cultured MTB strains in the
<jats:italic>Proteobacteria</jats:italic>
phylum. Here, we show a comprehensive transmission electron microscopy (TEM) study of magnetic and structural properties down to atomic scales on bullet-shaped magnetites produced by the uncultured strain MYR-1 belonging to the
<jats:italic>Nitrospirae</jats:italic>
phylum, a deeply branching phylogenetic MTB group. We observed a multiple-step crystal growth of MYR-1 magnetite: initial isotropic growth forming cubo-octahedral particles (less than approx. 40 nm), subsequent anisotropic growth and a systematic final elongation along [001] direction. During the crystal growth, one major {111} face is well developed and preserved at the larger basal end of the crystal. The basal {111} face appears to be terminated by a tetrahedral–octahedral-mixed iron surface, suggesting dimensional advantages for binding protein(s), which may template the crystallization of magnetite. This study offers new insights for understanding magnetite biomineralization within the
<jats:italic>Nitrospirae</jats:italic>
phylum.
</jats:p> |
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| author | Li, Jinhua, Menguy, Nicolas, Gatel, Christophe, Boureau, Victor, Snoeck, Etienne, Patriarche, Gilles, Leroy, Eric, Pan, Yongxin |
| author_facet | Li, Jinhua, Menguy, Nicolas, Gatel, Christophe, Boureau, Victor, Snoeck, Etienne, Patriarche, Gilles, Leroy, Eric, Pan, Yongxin, Li, Jinhua, Menguy, Nicolas, Gatel, Christophe, Boureau, Victor, Snoeck, Etienne, Patriarche, Gilles, Leroy, Eric, Pan, Yongxin |
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| description | <jats:p> Magnetotactic bacteria (MTB) are known to produce single-domain magnetite or greigite crystals within intracellular membrane organelles and to navigate along the Earth's magnetic field lines. MTB have been suggested as being one of the most ancient biomineralizing metabolisms on the Earth and they represent a fundamental model of intracellular biomineralization. Moreover, the determination of their specific crystallographic signature (e.g. structure and morphology) is essential for palaeoenvironmental and ancient-life studies. Yet, the mechanisms of MTB biomineralization remain poorly understood, although this process has been extensively studied in several cultured MTB strains in the <jats:italic>Proteobacteria</jats:italic> phylum. Here, we show a comprehensive transmission electron microscopy (TEM) study of magnetic and structural properties down to atomic scales on bullet-shaped magnetites produced by the uncultured strain MYR-1 belonging to the <jats:italic>Nitrospirae</jats:italic> phylum, a deeply branching phylogenetic MTB group. We observed a multiple-step crystal growth of MYR-1 magnetite: initial isotropic growth forming cubo-octahedral particles (less than approx. 40 nm), subsequent anisotropic growth and a systematic final elongation along [001] direction. During the crystal growth, one major {111} face is well developed and preserved at the larger basal end of the crystal. The basal {111} face appears to be terminated by a tetrahedral–octahedral-mixed iron surface, suggesting dimensional advantages for binding protein(s), which may template the crystallization of magnetite. This study offers new insights for understanding magnetite biomineralization within the <jats:italic>Nitrospirae</jats:italic> phylum. </jats:p> |
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| spelling | Li, Jinhua Menguy, Nicolas Gatel, Christophe Boureau, Victor Snoeck, Etienne Patriarche, Gilles Leroy, Eric Pan, Yongxin 1742-5689 1742-5662 The Royal Society Biomedical Engineering Biochemistry Biomaterials Bioengineering Biophysics Biotechnology http://dx.doi.org/10.1098/rsif.2014.1288 <jats:p> Magnetotactic bacteria (MTB) are known to produce single-domain magnetite or greigite crystals within intracellular membrane organelles and to navigate along the Earth's magnetic field lines. MTB have been suggested as being one of the most ancient biomineralizing metabolisms on the Earth and they represent a fundamental model of intracellular biomineralization. Moreover, the determination of their specific crystallographic signature (e.g. structure and morphology) is essential for palaeoenvironmental and ancient-life studies. Yet, the mechanisms of MTB biomineralization remain poorly understood, although this process has been extensively studied in several cultured MTB strains in the <jats:italic>Proteobacteria</jats:italic> phylum. Here, we show a comprehensive transmission electron microscopy (TEM) study of magnetic and structural properties down to atomic scales on bullet-shaped magnetites produced by the uncultured strain MYR-1 belonging to the <jats:italic>Nitrospirae</jats:italic> phylum, a deeply branching phylogenetic MTB group. We observed a multiple-step crystal growth of MYR-1 magnetite: initial isotropic growth forming cubo-octahedral particles (less than approx. 40 nm), subsequent anisotropic growth and a systematic final elongation along [001] direction. During the crystal growth, one major {111} face is well developed and preserved at the larger basal end of the crystal. The basal {111} face appears to be terminated by a tetrahedral–octahedral-mixed iron surface, suggesting dimensional advantages for binding protein(s), which may template the crystallization of magnetite. This study offers new insights for understanding magnetite biomineralization within the <jats:italic>Nitrospirae</jats:italic> phylum. </jats:p> Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the <i>Nitrospirae</i> phylum Journal of The Royal Society Interface |
| spellingShingle | Li, Jinhua, Menguy, Nicolas, Gatel, Christophe, Boureau, Victor, Snoeck, Etienne, Patriarche, Gilles, Leroy, Eric, Pan, Yongxin, Journal of The Royal Society Interface, Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum, Biomedical Engineering, Biochemistry, Biomaterials, Bioengineering, Biophysics, Biotechnology |
| title | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_full | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_fullStr | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_full_unstemmed | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_short | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| title_sort | crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the <i>nitrospirae</i> phylum |
| title_unstemmed | Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum |
| topic | Biomedical Engineering, Biochemistry, Biomaterials, Bioengineering, Biophysics, Biotechnology |
| url | http://dx.doi.org/10.1098/rsif.2014.1288 |