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. 1989 Oct;171(10):5473–5478. doi: 10.1128/jb.171.10.5473-5478.1989

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

R Heise 1, V Müller 1, G Gottschalk 1
PMCID: PMC210386  PMID: 2507527

Abstract

Growth of Acetobacterium woodii on fructose was stimulated by Na+; this stimulation was paralleled by a shift of the acetate-fructose ratio from 2.1 to 2.7. Growth on H2-CO2 or on methanol plus CO2 was strictly dependent on the presence of sodium ions in the medium. Acetate formation from formaldehyde plus H2-CO by resting cells required Na+, but from methanol plus H2-CO did not. This is analogous to H2-CO2 reduction to methane by Methanosarcina barkeri, which involves a sodium pump (V. Müller, C. Winner, and G. Gottschalk, Eur. J. Biochem. 178:519-525, 1988). This suggests that the reduction of methylenetetrahydrofolate to methyltetrahydrofolate is the Na+-requiring reaction. A sodium gradient (Na+ out/Na+ in = 32, delta pNa = -91 mV) was built up when resting cells of A. woodii were incubated under H2-CO2. Acetogenesis was inhibited when the delta pNa was dissipated by monensin.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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