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. 1985 Jan 15;225(2):413–419. doi: 10.1042/bj2250413

Electroneutral efflux of Ca2+ from liver mitochondria.

M D Brand
PMCID: PMC1144605  PMID: 2983672

Abstract

Respiring liver mitochondria were allowed to export Ca2+ on the endogenous Ca2+/nH+ antiporter in the presence of Ruthenium Red (to inhibit uptake on the Ca2+ uniporter) until a steady state was reached. Addition of sufficient of the ionophore A23187 (which catalyses Ca2+/2H+ exchange) to bring the Ca2+ and H+ gradients into equilibrium did not alter the steady state. Thermodynamic analysis showed that if a Ca2+/nH+ exchange with any value of n other than 2 was at equilibrium, addition of A23187 would have caused an easily measurable change in extramitochondrial free [Ca2+]. Therefore, the endogenous carrier of liver mitochondria catalyses electroneutral Ca2+/2H+ antiport.

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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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