Detection of divinyl ether synthase in Lily-of-the-Valley (Convallaria majalis) roots.
Phytochemistry
; 69(16): 2793-8, 2008 Nov.
Article
en En
| MEDLINE
| ID: mdl-18952245
ABSTRACT
Incubations of linoleic acid with cell-free preparations from Lily-of-the-Valley (Convallaria majalis L., Ruscaceae) roots revealed the presence of 13-lipoxygenase and divinyl ether synthase (DES) activities. Exogenous linoleic acid was metabolized predominantly into (9Z,11E,1'E)-12-(1'-hexenyloxy)-9,11-dodecadienoic (etheroleic) acid. Its identification was confirmed by the data of ultraviolet spectroscopy, mass spectra, (1)H NMR, COSY, catalytic hydrogenation. The isomeric divinyl ether (8E,1'E,3'Z)-12-(1',3'-nonadienyloxy)-8-nonenoic (colneleic) acid was detected as a minor product. Incubations with linoleic acid hydroperoxides revealed that 13-hydroperoxide was a preferential substrate, while the 9-hydroperoxide was utilized with lesser efficiency.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
/
Sistema Enzimático del Citocromo P-450
/
Convallaria
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Phytochemistry
Año:
2008
Tipo del documento:
Article