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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Noda, C. Rhead, W. J. Tanaka, K. |
| Abstract | There has been ambiguity concerning the specificity of the enzymes that dehydrogenate short branched-chain acyl-CoAs. It previously had been assumed that isovaleryl-CoA is dehydrogenated by n-butyryl-CoA dehydrogenase [butyryl-CoA:(acceptor) oxidoreductase, EC 1.3.99.2]. To solve this problem, we fractionated five short-chain acyl-CoA dehydrogenases (isovaleryl-CoA, n-butyryl-CoA, isobutyryl-CoA, n-octanoyl-CoA, and glutaryl-CoA dehydrogenases) from rat liver mitochondria by isoelectric focusing and DEAE-cellulose column chromatography. The isovaleryl-CoA dehydrogenase [isovaleryl-CoA:(acceptor) oxidoreductase, EC 1.3.99.10] peak was almost completely separated from the peaks of n-butyryl CoA- and n-octanoyl-CoA dehydrogenases by isoelectric focusing, and it was well separated from glutaryl-CoA dehydrogenase [glutaryl-CoA:(acceptor) oxidoreductase (decarboxylating), EC 1.3.99.7] and n-octanoyl-CoA dehydrogenase by DEAE-cellulose column chromatography. The isovaleryl-CoA dehydrogenase peak partly overlapped that of n-butyryl-CoA and isobutyryl-CoA dehydrogenases in the latter procedure. These results unequivocally demonstrate that isovaleryl-CoA is oxidized by a specific isovaleryl-CoA dehydrogenase. The other dehydrogenase peaks also demonstrated activity toward a single substrate, except that isobutyryl-CoA dehydrogenase activity could not be clearly resolved from n-butyryl-CoA dehydrogenase activity. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 5 |
| Volume Number | 77 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1980-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Fatty Acid Desaturases Metabolism Mitochondria, Liver Enzymology Oxidoreductases Acting On CH-CH Group Donors Oxidoreductases Animals Chromatography, Ion Exchange Isolation & Purification Isoelectric Focusing Isovaleryl-CoA Dehydrogenase Valerates Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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