Abstract
Summary
Rat liver homogenates were fractionated into mitochondria, microsomes and soluble fraction. Cholesterol-4-C14 was found to be esterified in sytems containing whole homogenate, mitochondria plus soluble fraction, microsomes plus soluble fraction and soluble fraction alone. Virtually no esterifying activity was obtained in the presence of heated soluble fraction. A stimulatory effect of DPN on sterol ester formation was noted. The findings suggest that different parts of the liver cell possess the capability of forming sterol esters.
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