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Matches in SemOpenAlex for { <https://semopenalex.org/work/W4281999833> ?p ?o ?g. }

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• W4281999833 abstract "Chromate is a toxic metal that enters bacteria by using oxyanion importers. Here, we show that each mutant of the Tol–Pal system of Escherichia coli exhibited increased chromate resistance. This system, which spans the cell envelope, plays a major role in envelope integrity and septation. The ΔtolQR mutant accumulated three-fold less chromate than the wild-type. Addition of phosphate but not sulfate to rich medium drastically reduced chromate toxicity and import in the wild-type strain. Furthermore, the intracellular concentration of free inorganic phosphate was significantly reduced for the ΔtolR mutant in comparison to the wild-type strain. Moreover, extracellular labeled phosphate was significantly less incorporated into the ΔtolR mutant. Finally, two distinct TolQR mutant complexes, specifically affected in Tol–Pal energization without affecting the TolQRA complex structure, did not complement the ΔtolQR mutant for inorganic phosphate accumulation. We thus propose that, while the Pst system is well known to import inorganic phosphate, the Tol–Pal system participates to phosphate uptake in particular at medium to high extracellular phosphate concentrations. Since mutations disabling the Tol–Pal system lead to pleiotropic effects, chromate resistance and reduced inorganic phosphate import could occur from an indirect effect of mutations in components of the Tol–Pal system." @default.
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• W4281999833 date "2022-10-01" @default.
• W4281999833 modified "2023-10-09" @default.
• W4281999833 title "The Tol–Pal system of Escherichia coli plays an unexpected role in the import of the oxyanions chromate and phosphate" @default.
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• W4281999833 doi "https://doi.org/10.1016/j.resmic.2022.103967" @default.
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