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乳酸菌中多种细菌素的产生。

Multiple bacteriocin production in lactic acid bacteria.

机构信息

National Institute of Molecular Biology and Biotechnology (BIOTECH), University of the Philippines Los Baños (UPLB), Los Baños, Laguna 4031, Philippines.

Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan.

出版信息

J Biosci Bioeng. 2022 Oct;134(4):277-287. doi: 10.1016/j.jbiosc.2022.07.007. Epub 2022 Aug 1.

Abstract

Bacteriocin production in lactic acid bacteria (LAB) has always been considered as a highly desirable trait as it enhances the strain's utility in different industrial applications. Bacteriocin producing LAB strains are considered to have higher bacterial fitness as they are able to easily establish themselves into target microbial niche and hence are more effective starter cultures in food fermentation and/or probiotic strains. The rapid advancement in genomic research revealed the true bacteriocin producing capacity of some select novel LAB strains capable of producing multiple bacteriocins which further improves their utility in different application systems. What is common to these novel strains is the remarkable sharing of some elements in the biosynthetic process enabling them to accomplish the extraordinary feat of producing multiple bacteriocins without exhausting its energy. Contrary to the common understanding that biosynthetic enzymes are specific to their cognate bacteriocins, multiple bacteriocin producing strains employ shared biosynthetic elements between their multiple bacteriocins. The quorum-sensing three-component regulatory system, bacteriocin maturation and transport mechanisms are shared among multiple bacteriocins in these strains. Nevertheless, although these novel strains possess enormous application potential, their safety with regards to their potential virulence and pathogenicity needs to be confirmed through comprehensive genotypic characterization. Here, we compile the occurrence of multiple bacteriocin production in some novel LAB strains and highlight specific examples of the unique sharing mechanism of its biosynthetic machinery because a good understanding how these novel strains synthesize their multiple bacteriocins can aid in maximizing their application potential.

摘要

乳酸菌(LAB)产生细菌素一直被认为是一种非常理想的特性,因为它增强了菌株在不同工业应用中的实用性。产细菌素的 LAB 菌株被认为具有更高的细菌适应性,因为它们能够轻易地在目标微生物生境中建立自己的地位,因此在食品发酵和/或益生菌菌株中更有效。基因组研究的快速进展揭示了一些选定的新型 LAB 菌株真正的产细菌素能力,这些菌株能够产生多种细菌素,进一步提高了它们在不同应用系统中的实用性。这些新型菌株的共同点是,生物合成过程中的一些元素显著共享,使它们能够在不耗尽能量的情况下完成产生多种细菌素的非凡壮举。与生物合成酶特异性地与其同源细菌素的普遍理解相反,多种细菌素产生菌株在其多种细菌素之间共享生物合成元件。这些菌株中的群体感应三组分调节系统、细菌素成熟和运输机制在多种细菌素中共享。然而,尽管这些新型菌株具有巨大的应用潜力,但需要通过全面的基因型特征来确认它们在潜在毒力和致病性方面的安全性。在这里,我们汇编了一些新型 LAB 菌株中多种细菌素产生的情况,并强调了其生物合成机制的独特共享机制的具体实例,因为深入了解这些新型菌株如何合成其多种细菌素可以帮助最大限度地发挥其应用潜力。

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