• Biochim. Biophys. Acta · Mar 2010

    Mitochondria isolated in nearly isotonic KCl buffer: focus on cardiolipin and organelle morphology.

    • Angela Corcelli, Matilde Sublimi Saponetti, Patrizia Zaccagnino, Patrizia Lopalco, Maria Mastrodonato, Giuseppa E Liquori, and Michele Lorusso.
    • Department of Medical Biochemistry, Biology and Physics, University of Bari, Bari, Italy. a.corcelli@biologia.uniba.it
    • Biochim. Biophys. Acta. 2010 Mar 1; 1798 (3): 681-7.

    AbstractRat liver mitochondria were isolated in parallel in two different isolation buffers: a standard buffer containing mannitol/sucrose and a nearly physiological KCl based solution. The two different organelle preparations were comparatively characterized by respiratory activity, heme content, microsomal and Golgi contamination, electron microscopy and lipid analyses. The substitution of saccharides with KCl in the isolation buffer does not induce the formation of mitoplasts or disruption of mitochondria. Mitochondria isolated in KCl buffer are coupled and able to maintain a stable transmembrane charge separation. A number of biochemical and functional differences between the two organelle preparations are described; in particular KCl mitochondria exhibit lower cardiolipin content and smaller intracristal compartments in comparison with the standard mitochondrial preparation.Copyright 2010 Elsevier B.V. All rights reserved.

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