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EnglishEnzymes of the β-oxidation pathway in rice (Oryza sativa L., cv. Arborio) coleoptiles were investigated. The coleoptiles contain acyl-CoA oxidase (EC 1.3.99.3), 3-hydroxyacyl-CoA dehydrogenase (EC 1.1.1.35), enoyl-CoA hydratase (EC 4.2.1.17) and thiolase (EC 2.3.1.9). Analysis of coleoptile homogenates by sucrose density fractionation showed a preferential distribution of these enzymes in the unspecialized peroxisomes. The enzymatic activity found in the mitochondrial fraction was due to peroxisomal contamination since electron micrographs show the peroxisomes to be intact and pure whereas the mitochondrial fraction was contaminated by other organelles. It appears that the β-oxidation pathway is localized in the unspecialized peroxisomes of rice coleoptiles, extending the number of plant species in which such a localization has been observed.
| Autori interni: | ||
| Autori: | Pistelli, Laura; Rascio, N.; De Bellis, L.; Alpi, Amedeo | |
| Titolo: | Localization of ß-oxidation enzymes in peroxisomes of rice coleoptiles | |
| Anno del prodotto: | 1989 | |
| Digital Object Identifier (DOI): | 10.1111/j.1399-3054.1989.tb05623.x | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11568/11612
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