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Mitochondrial and peroxisomal β-oxidations in pig coronary smooth muscle cells

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, ISSN: 0305-0491, Vol: 87, Issue: 2, Page: 217-220
1987
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1.1. The total subcellular membranes of pig coronary media were fractionated using a sucrose density gradient.2.2. A fraction with high succinate dehydrogenase activity and a mean density of 1.165 was separated from a fraction with high catalase activity and a mean density of 1.145.3.3. Acyl CoA β-oxidation activity measured in the absence of BSA was present in both fractions with 47% of the total activity in the succinate dehydrogenase fraction and 47% in the catalase fraction.4.4. In the succinate dehydrogenase fraction bovine serum albumin stimulated the acyl CoA β-oxidation (maximal sitmulation, 3.2 times at a concentration of 15 mg%) while in the catalase fraction it had no effect.5.5. It is concluded that, in pig coronary media, the β-oxidation system has two components, i.e. mitochondrial and peroxisomal β-oxidation.

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