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. 1979 Oct;140(1):197–205. doi: 10.1128/jb.140.1.197-205.1979

Membrane H+ conductance of Streptococcus lactis.

P C Maloney
PMCID: PMC216796  PMID: 40951

Abstract

Membrane conductance to H+ was measured in the anaerobic bacterium Streptoccus lactis by a pulse technique employing a low driving force (0.1 pH unit; 6 mV). Over the pH range of 3.7 to 8.5, a constant value for passive H+ conductance was observed, corresponding to 0.2 mumol of H+/s per p/ unit per g, dry weight (1.6 microS/cm2 of surface area). The pH insensitivity of this low basal H+ conductance supports the idea that a circulation of protons can mediate highly efficiency engery transductions across the membranes of bacteria.

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Selected References

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