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Ca2+-dependent inhibition by trifluoperazine of the Na+-Ca2+ carrier in mitoplasts derived from heart mitochondria.

Hayat, LH; Crompton, M; (1985) Ca2+-dependent inhibition by trifluoperazine of the Na+-Ca2+ carrier in mitoplasts derived from heart mitochondria. FEBS Lett , 182 (2) pp. 281-286.

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Abstract

The interaction of trifluoperazine and extramitochondrial Ca2+ with the heart mitochondrial Na+-Ca2+ carrier has been investigated. External Ca2+ inhibits the carrier equally in mitochondria and mitoplasts in which the outer membrane is lysed. Sensitivity to Ca2+ is not removed by washing mitoplasts under varied conditions. Trifluoperazine is a potent inhibitor of the carrier in mitoplasts but not in mitochondria. Trifluoperazine inhibition in mitoplasts depends markedly on the presence of extramitochondrial Ca2+ (2 microM).

Type: Article
Title: Ca2+-dependent inhibition by trifluoperazine of the Na+-Ca2+ carrier in mitoplasts derived from heart mitochondria.
Location: England
Keywords: Animals, Calcium, Carrier Proteins, Cytochrome c Group, Mitochondria, Heart, Rats, Ruthenium Red, Sodium-Calcium Exchanger, Trifluoperazine
UCL classification: UCL > School of Life and Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Life Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1344264
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