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  • Title: Molecular weights of subunits of acetyl CoA carboxylase in rat liver cytoplasm.
    Author: Goodson J, Pope TS, Allred JB.
    Journal: Biochem Biophys Res Commun; 1984 Jul 31; 122(2):694-9. PubMed ID: 6147137.
    Abstract:
    Monomeric [14C] methyl avidin was shown to bind to sodium dodecyl sulfate-denatured biotinyl proteins and remain bound through polyacrylamide gel electrophoresis which allowed their detection by fluorography. This method was used to show that purified rat liver acetyl CoA carboxylase contained two high molecular weight forms of the enzyme (MR = 241,000 and 252,000) while rapidly prepared, crude rat liver cytoplasm contained two larger molecular weight (MR = 257,000 and 270,000) forms. Thus, the enzyme had undergone substantial proteolysis during purification. The crude enzyme preparation also contained a smaller biotinyl protein (MR = 141,000) which is likely a proteolytic product of the larger forms of acetyl CoA carboxylase.
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