Recent advances in studies on magnetosome-associated proteins composing the bacterial geomagnetic sensor organelle

IF 1.9 4区 医学 Q4 IMMUNOLOGY
Azuma Taoka, Yukako Eguchi, Rino Shimoshige, Yoshihiro Fukumori
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引用次数: 0

Abstract

Magnetotactic bacteria (MTB) generate a membrane-enclosed subcellular compartment called magnetosome, which contains a biomineralized magnetite or greigite crystal, an inner membrane–derived lipid bilayer membrane, and a set of specifically targeted associated proteins. Magnetosomes are formed by a group of magnetosome-associated proteins encoded in a genomic region called magnetosome island. Magnetosomes are then arranged in a linear chain–like positioning, and the resulting magnetic dipole of the chain functions as a geomagnetic sensor for magneto-aerotaxis motility. Recent metagenomic analyses of environmental specimens shed light on the sizable phylogenetical diversity of uncultured MTB at the phylum level. These findings have led to a better understanding of the diversity and conservation of magnetosome-associated proteins. This review provides an overview of magnetosomes and magnetosome-associated proteins and introduces recent topics about this fascinating magnetic bacterial organelle.

细菌地磁传感细胞器磁小体相关蛋白的研究进展
趋磁细菌(MTB)产生一种膜封闭的亚细胞小室,称为磁小体,其中含有生物矿化的磁铁矿或灰钼矿晶体,内膜衍生的脂质双层膜和一组特异性靶向相关蛋白。磁小体是由一组在称为磁小体岛的基因组区域编码的磁小体相关蛋白形成的。然后将磁小体排列成线性链状定位,由此产生的磁偶极子链作为地磁传感器,用于磁致航性运动。最近对环境标本的宏基因组分析揭示了未培养结核分枝杆菌在门水平上相当大的系统发育多样性。这些发现使我们对磁小体相关蛋白的多样性和保守性有了更好的了解。本文综述了磁小体和磁小体相关蛋白的研究进展,并介绍了这种迷人的磁性细菌细胞器的最新研究课题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Microbiology and Immunology
Microbiology and Immunology 医学-免疫学
CiteScore
5.20
自引率
3.80%
发文量
78
审稿时长
1 months
期刊介绍: Microbiology and Immunology is published in association with Japanese Society for Bacteriology, Japanese Society for Virology, and Japanese Society for Host Defense Research. It is peer-reviewed publication that provides insight into the study of microbes and the host immune, biological and physiological responses. Fields covered by Microbiology and Immunology include:Bacteriology|Virology|Immunology|pathogenic infections in human, animals and plants|pathogenicity and virulence factors such as microbial toxins and cell-surface components|factors involved in host defense, inflammation, development of vaccines|antimicrobial agents and drug resistance of microbes|genomics and proteomics.
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