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Purification and partial characterization of acetyl-coA synthetase in rat liver mitochondria. 2002

Hiromi Yamashita, and Akemi Fukuura, and Tomomi Nakamura, and Takao Kaneyuki, and Masumi Kimoto, and Miki Hiemori, and Hideaki Tsuji
Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, 111 Kuboki, Soja, Okayama 719-1197, Japan. yamashit@fhw.oka-pu.ac.jp

Acetyl-CoA synthetase (AceCS), which catalyzes the activation of acetate to produce acetyl-CoA, was found to have a much greater Km value for acetate in liver mitochondria than that in the heart mitochondria of rats, indicating that two different types of AceCS are located in the liver and heart mitochodria. Recently, Fujino et al. reported that mouse heart mitochondrial AceCS, designated AceCS2, was expressed in a wide range of tissues, however, it was apparently absent from the liver. In this study, liver mitochondrial AceCS activity, but not heart AceCS2, was greatly induced in di(2-ethylhexyl)phthalate (DEHP)-treated rats. We purified and characterized the rat liver mitochondrial AceCS. The molecular mass of the enzyme estimated by SDS-PAGE was -58 kDa, which was quite different from that of the heart mitochondrial enzyme, AceCS2. The calculated Km value for the acetate of the partially purified liver enzyme was much greater, being about 100 times that of heart enzyme, AceCS2.

UI MeSH Term Description Entries
D008297 Male Males
D008929 Mitochondria, Heart The mitochondria of the myocardium. Heart Mitochondria,Myocardial Mitochondria,Mitochondrion, Heart,Heart Mitochondrion,Mitochondria, Myocardial
D008930 Mitochondria, Liver Mitochondria in hepatocytes. As in all mitochondria, there are an outer membrane and an inner membrane, together creating two separate mitochondrial compartments: the internal matrix space and a much narrower intermembrane space. In the liver mitochondrion, an estimated 67% of the total mitochondrial proteins is located in the matrix. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p343-4) Liver Mitochondria,Liver Mitochondrion,Mitochondrion, Liver
D004051 Diethylhexyl Phthalate An ester of phthalic acid. It appears as a light-colored, odorless liquid and is used as a plasticizer for many resins and elastomers. Dioctyl Phthalate,Bis(2-ethylhexyl)phthalate,DEHP,Di(2-ethylhexyl)phthalate,Di-2-Ethylhexylphthalate,Di 2 Ethylhexylphthalate,Phthalate, Diethylhexyl,Phthalate, Dioctyl
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D000106 Acetate-CoA Ligase An enzyme that catalyzes the formation of CoA derivatives from ATP, acetate, and CoA to form AMP, pyrophosphate, and acetyl CoA. It acts also on propionates and acrylates. EC 6.2.1.1. Acetate Thiokinase,Acetyl Activating Enzyme,Acetyl CoA Synthetase,Acetothiokinase,Acetyl Coenzyme A Synthetase,Acetate CoA Ligase,Activating Enzyme, Acetyl,CoA Synthetase, Acetyl,Enzyme, Acetyl Activating,Ligase, Acetate-CoA,Synthetase, Acetyl CoA,Thiokinase, Acetate
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017207 Rats, Sprague-Dawley A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company. Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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