Altering translation allows <i>E. coli</i> to overcome G-quadruplex stabilizers

G-quadruplex (G4) structures can form in guanine-rich DNA or RNA and have been found to modulate cellular processes, including replication, transcription, and translation. Many studies on the cellular roles of G4s have focused on eukaryotic systems, with far fewer probing bacterial G4s. Using a chemical-genetic approach, we identified genes in Escherichia coli that are important for growth in G4-stabilizing conditions. Reducing levels of translation elongation factor Tu or slowing translation initiation or elongation with kasugamycin, chloramphenicol, or spectinomycin suppress the effects of G4-stabilizing compounds. In contrast, reducing the expression of specific translation termination or ribosome recycling proteins is detrimental to growth in G4-stabilizing conditions. Proteomic and transcriptomic analyses reveal decreased protein and transcript levels, respectively, for ribosome assembly factors and proteins associated with translation in the presence of G4 stabilizer. Our results support a model in which reducing the rate of translation by altering translation initiation, translation elongation, or ribosome assembly can compensate for G4-related stress in E. coli.

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Publication Details

Journal
Nucleic Acids Research
Published
2025-03-20
DOI
https://doi.org/10.1093/nar/gkaf264
Primary Topic
DNA and Nucleic Acid Chemistry
Type
article
Field-Weighted Citation Impact
0.00

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article

Altering translation allows E. coli to overcome G-quadruplex stabilizers

Michael Place, Marcel Morgenstern, Aidan M. McKenzie, Andrew F. Voter et al.
Nucleic Acids Research
DNA and Nucleic Acid Chemistry
article

Altering translation allows E. coli to overcome G-quadruplex stabilizers

Michael Place, Marcel Morgenstern, Aidan M. McKenzie, Andrew F. Voter, Jason M. Peters, James L. Keck, Rachel R. Cueny, Kevin S. Myers, Joshua J. Coon
article en

Abstract

G-quadruplex (G4) structures can form in guanine-rich DNA or RNA and have been found to modulate cellular processes, including replication, transcription, and translation. Many studies on the cellular roles of G4s have focused on eukaryotic systems, with far fewer probing bacterial G4s. Using a chemical-genetic approach, we identified genes in Escherichia coli that are important for growth in G4-stabilizing conditions. Reducing levels of translation elongation factor Tu or slowing translation initiation or elongation with kasugamycin, chloramphenicol, or spectinomycin suppress the effects of G4-stabilizing compounds. In contrast, reducing the expression of specific translation termination or ribosome recycling proteins is detrimental to growth in G4-stabilizing conditions. Proteomic and transcriptomic analyses reveal decreased protein and transcript levels, respectively, for ribosome assembly factors and proteins associated with translation in the presence of G4 stabilizer. Our results support a model in which reducing the rate of translation by altering translation initiation, translation elongation, or ribosome assembly can compensate for G4-related stress in E. coli.

Nucleic Acids ResearchVol. 53(6)
University of Wisconsin–Madison (US), Great Lakes Bioenergy Research Center (US), Morgridge Institute for Research (US)
National Institute of General Medical Sciences
Openalex Percentile: Top 94%
DNA and Nucleic Acid Chemistry
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Altering translation allows <i>E. coli</i> to overcome G-quadruplex stabilizers — Michael Place, Marcel Morgenstern, et al. · Nucleic Acids Research (2025) | TGRS Research Map | TGRS