@article{Locher1993Uptak-6927,
  year={1993},
  title={Uptake of 4-toluene sulfonate by Comamonas testosteroni T-2},
  number={4},
  volume={175},
  journal={Journal of Bacteriology},
  pages={1075--1080},
  author={Locher, Hans H. and Poolman, Bert and Cook, Alasdair M. and Konings, Wil N.}
}

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    <dcterms:bibliographicCitation>First publ. in: Journal of Bacteriology 175 (1993), 4, pp. 1075-1080</dcterms:bibliographicCitation>
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    <dcterms:abstract xml:lang="eng">The mechanism of transport of the xenobiotic 4-toluene sulfonate (TS) in Comamonas testosteroni T-2 was investigated. Rapid uptake of TS was observed only in cells grown with TS or 4-methylbenzoate as a carbon and energy source. Initial uptake rates under aerobic conditions showed substrate saturation kinetics, with an apparent affinity constant (Kt) of 88 microM and a maximal velocity (Vmax) of 26.5 nmol/min/mg of protein. Uptake of TS was inhibited completely by uncouplers and only marginally by ATPase inhibitors and the phosphate analogs arsenate and vanadate. TS uptake was also studied under anaerobic conditions, which prevented intracellular TS metabolism. TS was accumulated under anaerobic conditions in TS-grown cells upon imposition of an artificial transmembrane pH gradient (delta pH, inside alkaline). Uptake of TS was inhibited by structurally related methylated and chlorinated benzenesulfonates and benzoates. The results provide evidence that the first step in the degradation of TS by C. testosteroni T-2 is uptake by an inducible secondary proton symport system.</dcterms:abstract>
    <dc:contributor>Poolman, Bert</dc:contributor>
    <dc:creator>Locher, Hans H.</dc:creator>
    <dc:creator>Cook, Alasdair M.</dc:creator>
    <dc:contributor>Konings, Wil N.</dc:contributor>
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    <dc:contributor>Locher, Hans H.</dc:contributor>
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    <dcterms:title>Uptake of 4-toluene sulfonate by Comamonas testosteroni T-2</dcterms:title>
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    <dc:contributor>Cook, Alasdair M.</dc:contributor>
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