Pósfai Mihály, Lefèvre Christopher T, Trubitsyn Denis, Bazylinski Dennis A, Frankel Richard B
Department of Earth and Environmental Sciences, University of Pannonia Veszprém, Hungary.
Front Microbiol. 2013 Nov 26;4:344. doi: 10.3389/fmicb.2013.00344.
Magnetotactic bacteria (MTB) biomineralize magnetosomes, nano-scale crystals of magnetite or greigite in membrane enclosures that comprise a permanent magnetic dipole in each cell. MTB control the mineral composition, habit, size, and crystallographic orientation of the magnetosomes, as well as their arrangement within the cell. Studies involving magnetosomes that contain mineral and biological phases require multidisciplinary efforts. Here we use crystallographic, genomic and phylogenetic perspectives to review the correlations between magnetosome mineral habits and the phylogenetic affiliations of MTB, and show that these correlations have important implications for the evolution of magnetosome synthesis, and thus magnetotaxis.
趋磁细菌（MTB）生物矿化形成磁小体，即包裹在膜内的纳米级磁铁矿或硫复铁矿晶体，每个细胞中都包含一个永久磁偶极子。MTB控制磁小体的矿物成分、习性、大小、晶体取向以及它们在细胞内的排列。涉及包含矿物相和生物相的磁小体的研究需要多学科的努力。在这里，我们从晶体学、基因组学和系统发育学的角度来综述磁小体矿物习性与MTB系统发育关系之间的相关性，并表明这些相关性对磁小体合成的进化以及趋磁性具有重要意义。
