Bacterial sodium ion-coupled energetics

@article{Leeuwenhoek2004BacterialSI,
  title={Bacterial sodium ion-coupled energetics},
  author={Antoni van Leeuwenhoek},
  journal={Antonie van Leeuwenhoek},
  year={2004},
  volume={65},
  pages={381-395},
  url={https://api.semanticscholar.org/CorpusID:23763996}
}
  • A. Leeuwenhoek
  • Published in Antonie van Leeuwenhoek 2004
  • Biology, Environmental Science
  • Antonie van Leeuwenhoek
Two primary Na+ pumps in bacteria are focused on, the Na+-translocating oxaloacetate decarboxylase of Klebsiella pneumoniae and the Na- translocating F1F0 ATPase ofPropionigenium modestum, with large areas of complete sequence identity in the integral membrane-bound β-subunits including two conserved aspartates that may be important for Na+ translocation.
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16 Citations

Promiscuous archaeal ATP synthase concurrently coupled to Na+ and H+ translocation

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Phylogenomic analysis identifies a sodium-translocating decarboxylating oxidoreductase in thermotogae

It is suggested that the described two operons code together for sodium-translocating decarboxylating oxidoreductases capable of coupling oxidative decar boxylation of alpha-ketoacids with the export of sodium ions, which is a novel type of bioenergetic coupling.

Essential ion binding residues for Na+ flow in stator complex of the Vibrio flagellar motor

The data indicate that two threonine residues, PomA-T158 and Pom a-T186, together with PomB-D24, are important for Na+ conduction in the Vibrio flagellar motor, which contributes to clarify the mechanism of ion recognition and conversion of ion flow into mechanical force.

Anaplerotic Pathways in Halomonas elongata: The Role of the Sodium Gradient

The results show that the anaplerotic reactions in H. elongata are indeed subject to different evolutionary pressures than those of other gram-negative bacteria.

The sodium pumping NADH:quinone oxidoreductase (Na+-NQR), a unique redox-driven ion pump

The unique properties of Na+-NQR are summarized in terms of its redox cofactor composition, electron transfer reactions and a possible mechanism of coupling and pumping.

Proton Translocation and ATP Synthesis by the F o F 1 -ATPase of Purple Bacteria

The subunit compositions and construction principles of FoF1ATP synthases of various prokaryotic and eukaryotic organisms are very similar and have proven to be particularly useful for elucidating the electrochemical aspects of these organisms.

Ancient systems of sodium/potassium homeostasis as predecessors of membrane bioenergetics

A scenario is presented that details how the interplay between several, initially independent sodium pumps might have triggered the evolution of sodium-dependent membrane bioenergetics, followed by the separate emergence of the proton-dependent bioener getics in archaea and bacteria.

Autoinducer-2-Producing Protein LuxS, a Novel Salt- and Chloride-Induced Protein in the Moderately Halophilic Bacterium Halobacillus halophilus

Western blot analyses demonstrated a growth phase- and salinity-dependent production of LuxS, a protein involved in the activated methyl cycle and the production of autoinducer-2, which mediates quorum sensing between certain species.

Genetic and Biochemical Analysis of Anaerobic Respiration in Bacteroides fragilis and Its Importance In Vivo

Genetics, enzyme activity measurements, and mammalian gut colonization assays are combined to better understand the first committed step in respiration, the transfer of electrons from NADH to quinone.

Ion motive force dependence of protease secretion and phage transduction in Vibrio cholerae and Pseudomonas aeruginosa.

64 References

Mechanisms of sodium transport in bacteria.

The three Na(+)-translocating enzymes, oxaloacetate decarboxylase of Klebsiella pneumoniae, NADH: ubiquinone oxidoreductase of Vibrio alginolyticus and ATPase (F1F0) of Propionigenium modestum have been isolated and studied with respect to structure and function.

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H ' is the central coupling ion in bacterial energy metabolism, but it is not the only one; halorhodopsin functions as an electrogenic chloride pump in Halobactetr-iiai lialobjiini.

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H ' is the central coupling ion in bacterial energy metabolism, but it is not the only one; halorhodopsin functions as an electrogenic chloride pump in Halobactetr-iiai lialobjiini.

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Energy transduction at the membrane in C. fervidus is exclusively dependent on a Na+ cycle, demonstrating that secondary amino acid transport uses solely Na+ as coupling ion.

Life by a new decarboxylation‐dependent energy conservation mechanism with Na+ as coupling ion

It is concluded that ATP synthesis in P. modestum is driven by a Na+ ion gradient which is generated upon decarboxylation of methylmalonyl‐CoA, and that Na+ functions as the coupling ion.

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A new sodium‐transport system energized by the decarboxylation of oxaloacetate

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