Controlled Biomineralization of Magnetite in Bacteria
Controlled Biomineralization of Magnetite in Bacteria
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DOI：
10.1002/9783527691395.ch5
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发表时间：
2016-04
期刊：
影响因子：
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通讯作者：
Elodie C. T. Descamps;J. Abbe;D. Pignol;C. Lefevre
中科院分区：
文献类型：
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作者：
Elodie C. T. Descamps;J. Abbe;D. Pignol;C. Lefevre
一群微生物，不均匀地分布在细菌门的三个不同的门中，显示出独特的能力，能够沿着地磁场线排列和游动。这些被称为趋磁细菌（MTB）的微生物在微需氧或厌氧条件下生物矿化由嵌入生物膜中的磁铁矿或硫铁矿组成的纳米磁性颗粒。这种真正的原核细胞器，磁小体，在MTB的细胞质中排列，并像指南针一样为细胞提供方向，由于每个细胞的运动装置，游泳是可能的。多学科的研究领域集中在MTB的研究，旨在表征组成磁小体的无机和有机相。在本章中，我们讨论了目前的生物和化学知识的磁铁矿生物矿化在MTB。我们强调磁小体的性质和一些由此产生的应用。
A group of microorganisms, heterogeneously distributed in three different phyla of theBacteriadomain, displays the unique ability to align and swim along the geomagnetic field lines. These microorganisms, called magnetotactic bacteria (MTB), biomineralize, in microaerobic or anaerobic conditions, nanometric, magnetic particles composed of magnetite or greigite embedded in a biomembrane. This true prokaryotic organelle, the magnetosome, is aligned in the cytoplasm of the MTB and acts like a compass needle that gives an orientation to the cells, the swimming being possible, thanks to the motility apparatus of each cell. Multidisciplinary fields of research focus their studies on MTB and aim at characterizing both the inorganic and organic phases that compose the magnetosome. In this chapter, we discuss the current biological and chemical knowledge of magnetite biomineralization in MTB. We highlight the properties of magnetosomes and some resulting applications.