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  • Title: Bicarbonate ion-ATPase in rat liver cell fractions.
    Author: Izutsu KT, Siegel IA.
    Journal: Biochim Biophys Acta; 1975 Mar 13; 382(2):193-203. PubMed ID: 235326.
    Abstract:
    The distribution of HCO3MINUS-ATPase activity was studied in cell fractions prepared from homogenates of rat liver. The level of mitochondrial contamination in the microsomal fraction depended on the fractionation procedure and on the method of homogenization. With proper care, microsomes with undetectable mitochondrial contamination could be prepared. These microsomes had no detectable HCO3MINUS-ATPase activity. Approximately 85% of the total HCO3minus-ATPase activity of the post 6000 times g-min supernatant was recovered in the mitochondrial fraction. The properties of this mitochondrial HCO3minus-ATPase were not distinguishable from those of the various microsomal HCO3minus-ATPases previously described by other investigators.
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