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Studies on the intracellular localization of acetyl-CoA carboxylase.

作者信息

Geelen M J, Bijleveld C, Velasco G, Wanders R J, Guzmán M

机构信息

Laboratory of Veterinary Biochemistry and Institute of Biomembranes, Utrecht University, The Netherlands.

出版信息

Biochem Biophys Res Commun. 1997 Apr 7;233(1):253-7. doi: 10.1006/bbrc.1997.6437.

Abstract

The present work was performed to identify the subcellular localization of hepatic acetyl-CoA carboxylase (ACC). Cellular organelles involved in fatty acid oxidation that contain a malonyl-CoA sensitive carnitine palmitoyltransferase (CPT) activity or that are linked to the control of this activity were analysed for the presence of ACC. No significant amount of ACC was observed in the mitochondrial fraction prepared from isolated rat hepatocytes. Furthermore, no association of ACC activity and mass with isolated hepatic peroxisomes could be detected. Incubation of isolated hepatocytes with compounds known to affect the integrity of the cytoskeleton like okadaic acid or taxol indicates that ACC is associated with this subcellular structure of the hepatocyte. Such association may allow for efficient regulation of CPT activity and thus of fatty acid oxidation.

摘要

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