Magnetotactic bacteria (MTB) are major constituents of natural microbial communities in sediments and chemically stratified water columns. The ability of MTB to migrate along magnetic field lines is based on specific intracellular structures, the magnetosomes, which, in most MTB, are nanometer-sized, membrane-bound magnetic particles consisting of the iron mineral magnetite (Fe₃O₄). A broad diversity of morphological forms has been found in various MTB. The unique characteristics of bacterial magnetosomes have attracted a broad interdisciplinary research interest. The magnetosome membrane (MM) in Magnetospirillum gryphiswaldense contains a number of specific Mam proteins. Several mam genes were analyzed and assigned to different genomic regions. Many of the Mam proteins are highly conserved in other MTB but display low sequence similarity to any proteins from nonmagnetic organisms.

中文翻译：

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磁螺螺旋藻中磁小体的生物矿化作用。

趋磁细菌（MTB）是沉积物和化学分层水柱中天然微生物群落的主要成分。MTB沿着磁场线迁移的能力基于特定的细胞内结构，即磁小体，在大多数MTB中，它们是由铁矿磁铁矿（Fe ₃ O ₄）组成的纳米尺寸，膜结合磁性颗粒。在各种MTB中发现了各种各样的形态。细菌磁小体的独特特征引起了广泛的跨学科研究兴趣。灰螺螺旋藻中的磁小体膜（MM）包含许多特定的Mam蛋白。几只妈妈分析基因并分配给不同的基因组区域。许多Mam蛋白在其他MTB中高度保守，但与来自非磁性生物的任何蛋白相比，其序列相似性较低。