The synthesis of palmitoylcarnitine by etio-chloroplasts of greening barley leaves |
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| Authors: | David R. Thomas M. Noh Hj Jalil Robert J. Cooke Bob C. S. Yong Azis Ariffin Philip H. McNeil Clifford Wood |
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| Affiliation: | (1) Department of Plant Biology, Newcastle University, NE1 7RU Newcastle upon Tyne, UK;(2) Present address: Cocoa and Coconut Branch, MARDI, Perak, Malaysia;(3) Present address: School of Biological Sciences, University of East Anglia, NR4 7TJ Norwich, UK;(4) Present address: The Rubber Research Institute of Malaya, Kuala Lumpur, Malaysia;(5) Present address: Shell Research Limited, Shell Biosciences Laboratory, Sittingbourne Research Centre, ME9 8AG Stittingbourne, Kent, UK |
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| Abstract: | CoASH, Mg2+, ATP and (-)-carnitine were found to be essential for the production of palmitoylcarnitine from palmitate by purified barley etio-chloroplasts. It was concluded that long-chain acyl CoA synthetase (palmitoyl CoA synthetase, EC 6.2.1.3) and carnitine long-chain acyl-transferase (carnitine palmitoyltransferase, EC 2.3.1.21) activity were present in the etio-chloroplasts. It is suggested that the long-chain acylcarnitine formed may move more easily through membrane barriers than the long-chain acyl CoA compound. Also or alternatively this enzyme may spare CoA by transferring long-chain acyl groups from long-chain acyl CoA to carnitine. |
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| Keywords: | Carnitine palmitoyltransferase Etiochloroplasts Hordeum Palmitoylcarnitine |
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