G-quadruplex structures in bacteria: functional properties and prospects for use as biotargets

Shitikov E.A.1 , Bespiatykh D.A.1, Bodoev I.N.1, Zaychikova M.V.1

1. Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia
Section: Review
DOI: 10.18097/PBMC20226802093      PubMed Id: 35485483
Year: 2022  Volume: 68  Issue: 2  Pages: 93-103
G-quadruplexes (G4), non-canonical secondary DNA structures, are intensively investigated for a long time. In eukaryotic organisms they play an important role in the regulation of gene expression and DNA repair. G4 have also been found in the genomes of numerous bacteria and archaea, but their functional role has not yet been fully explored. Nevertheless, their participation in the formation of antigenic variability, pathogenicity, antibiotic resistance and survival in extreme conditions has been established. Currently, many tools have been developed to detect potential G4 sequences and confirm their formation ability. Since the controlled formation and resolution of the quadruplex are significant means for the regulation of genes critical for survival, a promising direction is the search for ligands — compounds that can have a stabilizing effect on the quadruplex structure and thereby alter gene expression. Currently, a number of ligands are already known, their use stops the growth of pathogenic microorganisms. G4 ligands are of interest as potential antibiotics, which are extremely relevant due to the wide spread of drug resistant pathogens.
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Keywords: quadruplexes, DNA secondary structure, antigenic variability, ligands, transcription regulation

Shitikov, E. A., Bespiatykh, D. A., Bodoev, I. N., Zaychikova, M. V. (2022). G-quadruplex structures in bacteria: functional properties and prospects for use as biotargets. Biomeditsinskaya Khimiya, 68(2), 93-103.
This paper is also available as the English translation: 10.1134/S1990750822040084
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