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  • Title: Studies on the fatty acid binding proteins in cytosol of rat liver.
    Author: Suzue G, Marcel YL.
    Journal: Can J Biochem; 1975 Jul; 53(7):804-9. PubMed ID: 1156949.
    Abstract:
    Gel filtration on Sephadex G-75 of crude rat liver supernatant preincubated with [1-14C]oleic acid yields three peaks of radioactivity which are attributed to the presence in these fractions of fatty acid binding proteins. We have confirmed these observations with binding assays by phase partition, polyacrylamide gel electrophoresis, and thin layer electrofocusing. Peak I (mol. wt. 60,000 pI 5.01 was shown to be albumin, which mainly arises from a contamination of the liver preparation by blood. Peak II (mol. wt. 10,000, pI 5.9) is a fatty acid binding protein. Finally peak III (mol. wt. 1500, pI 5.7) is a fatty acid binding component, the chemical nature of which was not elucidated. These fatty acid binding fractions have no effect on the reaction of acyl-CoA synthetase whereas the crude liver supernatant does stimulate the activation of fatty acid as shown earlier. In consequence, the physiological role of these fatty acid binding fractions is not yet elucidated.
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