Molecular Mechanisms to Optimize Gene Translation Elongation Differ Significantly in Bacteria with and without Non-Ribosomal Peptides

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Resumo

Non-ribosomal peptides play an important role in the vital activity of bacteria and have an extremely broad field of biological activity. In particular, they act as antibiotics, toxins, surfactants, siderophores, and also perform a number of other specific functions. Biosynthesis of these molecules does not occur on ribosomes but by special enzymes that form gene clusters in bacterial genomes. We hypothesized that the presence of non-ribosomal peptide synthesis pathways is a specific feature of bacterial metabolism, which may affect other vital processes of the cell, including translational ones. This work was the first to show the relationship between the translation regulation mechanism of protein-coding genes in bacteria, which is largely determined by the efficiency of translation elongation, and the presence of gene clusters in the genomes for the biosynthesis of non-ribosomal peptides. Bioinformatic analysis of the translation elongation efficiency of protein-coding genes was performed in 11679 bacterial genomes, some of which contained gene clusters of non-ribosomal peptide biosynthesis and some of which did not. The analysis showed that bacteria whose genomes contained clusters of non-ribosomal peptide biosynthetic genes and those without such gene clusters differ significantly in the molecular mechanisms that ensure translation efficiency. Thus, among microorganisms whose genomes contain gene clusters of non-ribosomal peptide synthetases, a significantly smaller part of them is characterized by optimized regulation of the number of local inverted repeats, while most of them have genomes optimized by the averaged energy of inverted repeats studs in mRNA and additionally by codon composition. Our results suggest that the presence of non-ribosomal peptide biosynthetic pathways in bacteria may influence the structure of the overall bacterial metabolism, which is also expressed in the specific mechanisms of ribosomal protein biosynthesis.

Sobre autores

A. Klimenko

Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences

Email: mat@bionet.nsc.ru
Russia, 630090, Novosibirsk

S. Lashin

Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences

Email: mat@bionet.nsc.ru
Russia, 630090, Novosibirsk

N. Kolchanov

Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences

Email: mat@bionet.nsc.ru
Russia, 630090, Novosibirsk

D. Afonnikov

Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences

Email: mat@bionet.nsc.ru
Russia, 630090, Novosibirsk

Yu. Matushkin

Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences

Autor responsável pela correspondência
Email: mat@bionet.nsc.ru
Russia, 630090, Novosibirsk

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Declaração de direitos autorais © А.И. Клименко, С.А. Лашин, Н.А. Колчанов, Д.А. Афонников, Ю.Г. Матушкин, 2023

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