Protonmotive force in freshwater sulfate-reducing bacteria, and its role in sulfate accumulation in Desulfobulbus propionicus

@article{Kreke1992ProtonmotiveFI,
  title={Protonmotive force in freshwater sulfate-reducing bacteria, and its role in sulfate accumulation in Desulfobulbus propionicus},
  author={Bernd Kreke and Heribert Cypionka},
  journal={Archives of Microbiology},
  year={1992},
  volume={158},
  pages={183-187}
}
The protonmotive force in several sulfate-reducing bacteria has been determined by means of radiolabelled membrane-permeant probes (tetraphenyl-phosphonium cation, TPP+, for Δψ, and benzoate for ΔpH). In six of ten freshwater strains tested only the pH gradient could be determine, while the membrane potential was not accessible due to nonspecific binding of TPP+. The protonmotive force of the other four strains was between −110 and −155 mV, composed of a membrane potential of −80 to −140 mV and… CONTINUE READING

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