Tabersonine
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Alcalóides indólicos em Peschiera australis (Muell. Arg.) Miers. var. australis
A espécie vegetal P. australis (Muell. Arg.) Miers. var. australis, Apocynaceae foi analisada quanto ao seu conteúdo alcaloídico em suas diversas partes. Foram isolados e caracterizados três alcalóides majoritários: olivacina, nas folhas e cascas das raízes; coronaridina, nas sementes e cascas das raízes e tabersonina, nas sementes.
Publicado em: 2010
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2. A Cytochrome P-450 Monooxygenase Catalyzes the First Step in the Conversion of Tabersonine to Vindoline in Catharanthus roseus.
Hydroxylation at the C-16 position of the indole alkaloid tabersonine has been suggested as the first step toward vindoline biosynthesis in Catharanthus roseus. Tabersonine 16-hydroxylase (16-OH) activity was detected in total protein extracts from young leaves of C. roseus using a novel coupled assay system. Enzyme activity was dependent on NADPH and molecu
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3. Molecular and Biochemical Analysis of a Madagascar Periwinkle Root-Specific Minovincinine-19-Hydroxy-O-Acetyltransferase1
The terminal steps in the biosynthesis of the monoterpenoid indole alkaloids vindoline and minovincinine are catalyzed by separate acetyl coenzyme A-dependent O-acetyltransferases in Madagascar periwinkle (Catharanthus roseus G. Don). Two genes were isolated that had 63% nucleic acid identity and whose deduced amino acid sequences were 78% identical. Ac
American Society of Plant Physiologists.
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4. Characterization of Alkaloid Uptake by Catharanthus roseus (L.) G. Don Protoplasts 1
The accumulation of alkaloids by protoplasts of Catharanthus roseus (L.) G. Don var. Little Bright Eye was studied to determine the specificity of uptake and the role of ion trapping in the storage of alkaloids. Accumulation of the indole alkaloids vindoline, ajmalicine, tabersonine, and vinblastine was found to be biphasic, with an initial burst of uptake f