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- W3093909327 abstract "Abstract Antibiotic resistance has become a global threat. In addition to acquiring resistance via horizontal gene transfer, bacteria can evade killing by temporarily modifying their cell envelope to prevent antibiotic-bacterial interactions. A critical gap in knowledge is how bacteria balance the metabolic needs of altering the cell envelope with the constant need to generate energy. Cross-regulation between two signaling networks in Escherichia coli increases resistance to positively charged antibiotics. We show that increased resistance is supported by metabolic re-wiring controlled by the QseB transcription factor. QseB controls the increase in 2-oxoglutarate required for lipid A modification, by upregulating three anaplerotic pathways that feed acetyl Co-A, succinate and fumarate into the TCA cycle. Exogenous addition of 2-oxoglutarate restores antibiotic resistance in the qseB deletion mutant. Antibiotic resistant clinical isolates bear mutations within QseB-mediated anaplerotic pathways. These findings are significant, because they uncover a previously unknown mechanism of metabolic control of antibiotic resistance." @default.
- W3093909327 created "2020-10-29" @default.
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- W3093909327 date "2020-10-23" @default.
- W3093909327 modified "2023-10-14" @default.
- W3093909327 title "A Bacterial Signaling Network Controls Antibiotic Resistance by Regulating Anaplerosis of 2-oxoglutarate" @default.
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- W3093909327 doi "https://doi.org/10.1101/2020.10.22.351270" @default.
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