Publication: Bacterial Sirtuins Overview: An Open Niche to Explore
Authors
Lozano Terol, Gema ; Cánovas Díaz, Manuel ; Diego Puente, Teresa de ; Gallego Jara, Julia ; Ortega Retuerta, Álvaro ; Sola Martínez, Rosa Alba
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Publisher
Frontiers
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DOI
https://doi.org/10.3389/fmicb.2021.744416
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info:eu-repo/semantics/article
Description
©2021. This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Published, version of a Published Work that appeared in final form in Frontiers In Microbiology. To access the final edited and published work see https://doi.org/10.3389/fmicb.2021.744416
Abstract
Sirtuins are deacetylase enzymes widely distributed in all domains of life. Although for decades they have been related only to histones deacetylation in eukaryotic organisms, today they are considered global regulators in both prokaryotes and eukaryotes. Despite the important role of sirtuins in humans, the knowledge about bacterial sirtuins is still limited. Several proteomics studies have shown that bacterial sirtuins deacetylate a large number of lysines in vivo, although the effect that this deacetylation causes
in most of them remains unknown. To date, only the regulation of a few bacterial sirtuin substrates has been characterized, being their metabolic roles widely distributed: carbon and nitrogen metabolism, DNA transcription, protein translation, or virulence. One of the most current topics on acetylation and deacetylation focuses on studying stoichiometry using quantitative LC-MS/MS. The results suggest that prokaryotic sirtuins
deacetylate at low stoichiometry sites, although more studies are needed to know if it is a common characteristic of bacterial sirtuins and its biological significance. Unlike eukaryotic organisms, bacteria usually have one or few sirtuins, which have been reported to have closer phylogenetic similarity with the human Sirt5 than with any other human sirtuin. In this work, in addition to carrying out an in-depth review of the role of bacterial sirtuins in their physiology, a phylogenetic study has been performed that reveals the evolutionary differences between sirtuins of different bacterial species and
even between homologous sirtuins.
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Citation
Frontiers In Microbiology, vol. 12, 744416
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