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Literature DB >> 3026814

Generation of a transmembrane gradient of Na+ in Methanosarcina barkeri.

Abstract

A transmembrane Na+ gradient was generated by Methanosarcina barkeri during methanogenesis. The intracellular Na+ concentration amounted to approximately one fifth of the extracellular one. A secondary Na+/H+ antiport system was shown to be responsible for Na+ extrusion. This system could be inhibited by amiloride. In the presence of amiloride the delta pH across the cytoplasmic membrane increased and a transmembrane Na+ gradient could neither be generated nor maintained. The possible role of Na+ in the oxidation of methanol to the level of formaldehyde is discussed.

Entities: Chemical Species

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Year: 1987 PMID： 3026814 DOI： 10.1111/j.1432-1033.1987.tb10624.x

Source DB: PubMed Journal: Eur J Biochem ISSN： 0014-2956

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Cited

12 in total

Review 1. Energetics of methanogenesis studied in vesicular systems.

Authors: M Blaut; V Müller; G Gottschalk
Journal: J Bioenerg Biomembr Date: 1992-12 Impact factor: 2.945

2. Metabolic regulation in methanogenic archaea during growth on hydrogen and CO2.

Authors: J T Keltjens; G D Vogels
Journal: Environ Monit Assess Date: 1996-09 Impact factor: 2.513

Review 3. Sodium, protons, and energy coupling in the methanogenic bacteria.

Authors: J R Lancaster
Journal: J Bioenerg Biomembr Date: 1989-12 Impact factor: 2.945

4. Differential effects of sodium on hydrogen- and glucose-dependent growth of the acetogenic bacterium Acetogenium kivui.

Authors: H C Yang; H L Drake
Journal: Appl Environ Microbiol Date: 1990-01 Impact factor: 4.792

9. Potassium extrusion by the moderately halophilic and alkaliphilic methanogen methanolobus taylorii GS-16 and homeostasis of cytosolic pH.

Authors: S Ni; J E Boone; D R Boone
Journal: J Bacteriol Date: 1994-12 Impact factor: 3.490

10. Delta mu Na+ drives the synthesis of ATP via an delta mu Na(+)-translocating F1F0-ATP synthase in membrane vesicles of the archaeon Methanosarcina mazei Gö1.

Authors: B Becher; V Müller
Journal: J Bacteriol Date: 1994-05 Impact factor: 3.490

Generation of a transmembrane gradient of Na+ in Methanosarcina barkeri.

Review 1. Energetics of methanogenesis studied in vesicular systems.

2. Metabolic regulation in methanogenic archaea during growth on hydrogen and CO2.

Review 3. Sodium, protons, and energy coupling in the methanogenic bacteria.

4. Differential effects of sodium on hydrogen- and glucose-dependent growth of the acetogenic bacterium Acetogenium kivui.

5. Energy conservation by a hydrogenase-dependent chemiosmotic mechanism in an ancient metabolic pathway.

6. Bioenergetics of methanogenesis from acetate by Methanosarcina barkeri.

Review 7. Na+/H+ antiporters, molecular devices that couple the Na+ and H+ circulation in cells.

8. Sodium dependence of acetate formation by the acetogenic bacterium Acetobacterium woodii.

9. Potassium extrusion by the moderately halophilic and alkaliphilic methanogen methanolobus taylorii GS-16 and homeostasis of cytosolic pH.

10. Delta mu Na+ drives the synthesis of ATP via an delta mu Na(+)-translocating F1F0-ATP synthase in membrane vesicles of the archaeon Methanosarcina mazei Gö1.