Bacterial cell volume regulation and the importance of cyclic di-AMP.

IF 8 1区 生物学 Q1 MICROBIOLOGY
Microbiology and Molecular Biology Reviews Pub Date : 2024-06-27 Epub Date: 2024-06-10 DOI:10.1128/mmbr.00181-23
Alexander J Foster, Marco van den Noort, Bert Poolman
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引用次数: 0

Abstract

SUMMARYNucleotide-derived second messengers are present in all domains of life. In prokaryotes, most of their functionality is associated with general lifestyle and metabolic adaptations, often in response to environmental fluctuations of physical parameters. In the last two decades, cyclic di-AMP has emerged as an important signaling nucleotide in many prokaryotic lineages, including Firmicutes, Actinobacteria, and Cyanobacteria. Its importance is highlighted by the fact that both the lack and overproduction of cyclic di-AMP affect viability of prokaryotes that utilize cyclic di-AMP, and that it generates a strong innate immune response in eukaryotes. In bacteria that produce the second messenger, most molecular targets of cyclic di-AMP are associated with cell volume control. Besides, other evidence links the second messenger to cell wall remodeling, DNA damage repair, sporulation, central metabolism, and the regulation of glycogen turnover. In this review, we take a biochemical, quantitative approach to address the main cellular processes that are directly regulated by cyclic di-AMP and show that these processes are very connected and require regulation of a similar set of proteins to which cyclic di-AMP binds. Altogether, we argue that cyclic di-AMP is a master regulator of cell volume and that other cellular processes can be connected with cyclic di-AMP through this core function. We further highlight important directions in which the cyclic di-AMP field has to develop to gain a full understanding of the cyclic di-AMP signaling network and why some processes are regulated, while others are not.

细菌细胞体积调节和环状二-AMP 的重要性。
摘要核苷酸衍生的第二信使存在于生命的各个领域。在原核生物中,它们的大部分功能与一般的生活方式和新陈代谢适应有关,通常是对环境物理参数波动的反应。在过去二十年中,环状二-AMP 已成为许多原核生物(包括固氮菌、放线菌和蓝藻)的重要信号核苷酸。环状二-AMP 的缺乏和过量产生都会影响利用环状二-AMP 的原核生物的生存能力,而且环状二-AMP 在真核生物中会产生强烈的先天性免疫反应,这些事实都凸显了环状二-AMP 的重要性。在产生第二信使的细菌中,环二-AMP 的大多数分子靶标都与细胞体积控制有关。此外,还有其他证据表明,第二信使与细胞壁重塑、DNA 损伤修复、孢子繁殖、中心代谢和糖原代谢调节有关。在这篇综述中,我们采用生化定量的方法来探讨直接受环状二-AMP 调节的主要细胞过程,并表明这些过程之间联系紧密,需要调节与环状二-AMP 结合的一组相似的蛋白质。总之,我们认为环状二-AMP 是细胞体积的主要调节因子,其他细胞过程也可以通过这一核心功能与环状二-AMP 联系起来。我们进一步强调了环状二-AMP 领域有待发展的重要方向,以便全面了解环状二-AMP 信号网络以及为什么某些过程受到调控而另一些过程不受调控。
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来源期刊
CiteScore
18.80
自引率
0.80%
发文量
27
期刊介绍: Microbiology and Molecular Biology Reviews (MMBR), a journal that explores the significance and interrelationships of recent discoveries in various microbiology fields, publishes review articles that help both specialists and nonspecialists understand and apply the latest findings in their own research. MMBR covers a wide range of topics in microbiology, including microbial ecology, evolution, parasitology, biotechnology, and immunology. The journal caters to scientists with diverse interests in all areas of microbial science and encompasses viruses, bacteria, archaea, fungi, unicellular eukaryotes, and microbial parasites. MMBR primarily publishes authoritative and critical reviews that push the boundaries of knowledge, appealing to both specialists and generalists. The journal often includes descriptive figures and tables to enhance understanding. Indexed/Abstracted in various databases such as Agricola, BIOSIS Previews, CAB Abstracts, Cambridge Scientific Abstracts, Chemical Abstracts Service, Current Contents- Life Sciences, EMBASE, Food Science and Technology Abstracts, Illustrata, MEDLINE, Science Citation Index Expanded (Web of Science), Summon, and Scopus, among others.
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