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  • Title: Solubilization and reconstitution of rat liver mitochondrial carnitine acylcarnitine translocase.
    Author: Noël H, Goswami T, Pande SV.
    Journal: Biochemistry; 1985 Aug 13; 24(17):4504-9. PubMed ID: 3933557.
    Abstract:
    Carnitine acylcarnitine translocase has been solubilized from inverted inner membrane vesicles of rat liver mitochondria with octyl glucoside and reconstituted into asolectin liposomes. For both processes, optimization of the detergent to phospholipid ratio was found crucial for obtaining reconstitutively active liposomes. Reassembly of the solubilized carrier into asolectin liposomes was achieved either by the octyl glucoside dilution method or by Extracti-Gel D column chromatography. The reconstituted system catalyzed exchange diffusion of carnitine, exhibited the expected inhibitor and temperature sensitivity, and discriminated between stereoisomers of octanoylcarnitine. The activity of unidirectional import of carnitine was low compared to exchange diffusion. It showed high-temperature sensitivity and a loss of activity on prolonged sonication that was regained by an appropriate freeze-thaw step subsequently.
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