Functional characterization of amyrin synthase involved in ursolic acid biosynthesis in Catharanthus roseus leaf epidermis
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منابع مشابه
Subcellular Localization of Enzymes Involved in Indole Alkaloid Biosynthesis in Catharanthus roseus.
The subcellular localization of enzymes involved in indole alkaloid biosynthesis in leaves of Catharanthus roseus has been investigated. Tryptophan decarboxylase and strictosidine synthase which together produce strictosidine, the first indole alkaloid of this pathway, are both cytoplasmic enzymes. S-Adenosyl-l-methionine: 16-methoxy-2,3-dihydro-3-hydroxytabersonine-N-methyltransferase which ca...
متن کاملPurification, characterization, and kinetic analysis of a 2-oxoglutarate-dependent dioxygenase involved in vindoline biosynthesis from Catharanthus roseus.
A 2-oxoglutarate-dependent dioxygenase (EC 1.14.11.11) which catalyzes the hydroxylation at position 4 of the indole alkaloid, desacetoxyvindoline has been purified to near homogeneity from Catharanthus roseus. The purification procedure combined conventional chromatographic methods and cosubstrate affinity chromatography on alpha-ketoglutarate-Sepharose. The specific activity of the 4-hydroxyl...
متن کاملCharacterization of 10-Hydroxygeraniol Dehydrogenase from Catharanthus roseus Reveals Cascaded Enzymatic Activity in Iridoid Biosynthesis
Catharanthus roseus [L.] is a major source of the monoterpene indole alkaloids (MIAs), which are of significant interest due to their therapeutic value. These molecules are formed through an intermediate, cis-trans-nepetalactol, a cyclized product of 10-oxogeranial. One of the key enzymes involved in the biosynthesis of MIAs is an NAD(P)(+) dependent oxidoreductase system, 10-hydroxygeraniol de...
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Saponaria vaccaria (Caryophyllaceae), a soapwort, known in western Canada as cowcockle, contains bioactive oleanane-type saponins similar to those found in soapbark tree (Quillaja saponaria; Rosaceae). To improve our understanding of the biosynthesis of these saponins, a combined polymerase chain reaction and expressed sequence tag approach was taken to identify the genes involved. A cDNA encod...
متن کاملSaponin biosynthesis in Saponaria vaccaria. cDNAs encoding beta-amyrin synthase and a triterpene carboxylic acid glucosyltransferase.
Saponaria vaccaria (Caryophyllaceae), a soapwort, known in western Canada as cowcockle, contains bioactive oleanane-type saponins similar to those found in soapbark tree (Quillaja saponaria; Rosaceae). To improve our understanding of the biosynthesis of these saponins, a combined polymerase chain reaction and expressed sequence tag approach was taken to identify the genes involved. A cDNA encod...
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ژورنال
عنوان ژورنال: Phytochemistry
سال: 2013
ISSN: 0031-9422
DOI: 10.1016/j.phytochem.2012.05.002