Carnitine Acetyltransferase: the Question of Multiple Forms
نویسندگان
چکیده
منابع مشابه
The substrate specificity of carnitine acetyltransferase.
1. A study of the acyl group specificity of the carnitine acetyltransferase reaction [acyl-(-)carnitine+CoASH right harpoon over left harpoon (-)-carnitine+acyl-CoA] has been made with the enzyme from pigeon breast muscle. Acyl groups containing up to 10 carbon atoms are transferred and detailed kinetic investigations with a range of acyl-CoA and acylcarnitine substrates are reported. 2. Acyl-C...
متن کاملCarnitine acetyltransferase in nervous tissue.
Some of the kinetic properties of carnitine acetyltransferase in brain homogenates have been reported with the use of a new, sensitive radiometric method for the determination of acetylcarnitine. Those properties and the distribution pattern of carnitine acetyltransferase in various rat tissues, subcellular fractions, and discrete areas of the brain have been compared with those obtained for ch...
متن کاملCytochemical localization of transferase activities: carnitine acetyltransferase.
Two methods for the cytochemical detection of free CoA and their utilization in the finestructural localization of carnitine acetyltransferase in rat heart are described. The first utilizes the reducing property of the SH group of CoA to reduce potassium ferricyanide to potassium ferrocyanide, which in the presence of uranyl ions forms an electron-dense precipitate of uranyl ferrocyanide. The s...
متن کاملProperties of partially purified carnitine acetyltransferase.
Subsequent reports from our laboratory showed that both carnitine (/3-hydroxy-y-trimethylammonium butyrate) and acetylcarnitinei increased oxygen uptake and oxidation of long chain fatty acids by heart homogenates incubated under conditions optimal for fatty acid oxidation (2, 3). Acetylcarnitine action could not be attributed simply to formation of carnitine via hydrolysis because acetylcarnit...
متن کاملStructural model of carnitine palmitoyltransferase I based on the carnitine acetyltransferase crystal.
CPT I (carnitine palmitoyltransferase I) catalyses the conversion of palmitoyl-CoA into palmitoylcarnitine in the presence of L-carnitine, facilitating the entry of fatty acids into mitochondria. We propose a 3-D (three-dimensional) structural model for L-CPT I (liver CPT I), based on the similarity of this enzyme to the recently crystallized mouse carnitine acetyltransferase. The model include...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1974
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1974.tb03613.x