Results 171 to 180 of about 4,886 (206)
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Planta Medica, 1996
An isocratic HPLC system is described which allows the separation of the iridoid and indole precursors of terpenoid indole alkaloids, which are present in a single crude extract. The system consists of a column of LiChrospher 60 RP select B 5 microm, 250 x 4 mm (Merck) with an eluent of 1% formic acid-acetonitrile-trichloroacetic acid (100:10:0.25, v:v:
D, Dagnino, J, Schripsema, R, Verpoorte
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An isocratic HPLC system is described which allows the separation of the iridoid and indole precursors of terpenoid indole alkaloids, which are present in a single crude extract. The system consists of a column of LiChrospher 60 RP select B 5 microm, 250 x 4 mm (Merck) with an eluent of 1% formic acid-acetonitrile-trichloroacetic acid (100:10:0.25, v:v:
D, Dagnino, J, Schripsema, R, Verpoorte
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Phytochemistry, 1994
Abstract Two cell lines of Tabernaemontana divaricata derived from the same suspension culture were compared with respect to their biotransformation capacity. One is a high indole alkaloid-producing culture which accumulated mainly O-acetylvallesamine. The other cell line biosynthesizes terpenoid indole alkaloids in much lower amounts.
Denise Dagnino +2 more
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Abstract Two cell lines of Tabernaemontana divaricata derived from the same suspension culture were compared with respect to their biotransformation capacity. One is a high indole alkaloid-producing culture which accumulated mainly O-acetylvallesamine. The other cell line biosynthesizes terpenoid indole alkaloids in much lower amounts.
Denise Dagnino +2 more
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Microbial allies: exploring fungal endophytes for biosynthesis of terpenoid indole alkaloids
Archives of MicrobiologyTerpenoid indole alkaloids (TIAs) are natural compounds found in medicinal plants that exhibit various therapeutic activities, such as antimicrobial, anti-inflammatory, antioxidant, anti-diabetic, anti-helminthic, and anti-tumor properties. However, the production of these alkaloids in plants is limited, and there is a high demand for them due to the ...
Jaya Prabha, Khalkho +4 more
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Plant Cell Reports, 2015
Transgenic hairy roots of R. stricta were developed for investigation of alkaloid accumulations. The contents of five identified alkaloids, including serpentine as a new compound, increased compared to non-transformed roots. Rhazya stricta Decne. is a rich source of pharmacologically active terpenoid indole alkaloids (TIAs).
Akhgari, Amir +5 more
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Transgenic hairy roots of R. stricta were developed for investigation of alkaloid accumulations. The contents of five identified alkaloids, including serpentine as a new compound, increased compared to non-transformed roots. Rhazya stricta Decne. is a rich source of pharmacologically active terpenoid indole alkaloids (TIAs).
Akhgari, Amir +5 more
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2022
Biosynthesis of the therapeutically valuable terpenoid indole alkaloids (TIAs), in the medicinal plant Catharanthus roseus, is one of the most elaborate and complex metabolic processes. Although genomic and transcriptomic resources have significantly accelerated gene discovery in the TIA pathway, relatively few genes of transcription factors (TFs) have
Sanjay K, Singh +8 more
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Biosynthesis of the therapeutically valuable terpenoid indole alkaloids (TIAs), in the medicinal plant Catharanthus roseus, is one of the most elaborate and complex metabolic processes. Although genomic and transcriptomic resources have significantly accelerated gene discovery in the TIA pathway, relatively few genes of transcription factors (TFs) have
Sanjay K, Singh +8 more
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Metabolic engineering of terpenoid indole alkaloid pathway in Catharanthus roseus
Planta Medica, 2013Eukaryotes such as higher plants have evolved to produce a diverse range of low-molecular-weight secondary compounds that can be used as food and feed additives, flavours, fragrances, cosmetics, agrochemicals and pharmaceuticals. The dominant role of secondary metabolites in the pharmaceutical industry is demonstrated by the fact that approximately 50%
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Applied Microbiology and Biotechnology, 2001
A transgenic Saccharomyces cerevisiae was constructed containing the cDNAs coding for strictosidine synthase (STR) and strictosidine beta-glucosidase (SGD) from the medicinal plant Catharanthus roseus. Both enzymes are involved in the biosynthesis of terpenoid indole alkaloids. The yeast culture was found to express high levels of both enzymes.
A, Geerlings +5 more
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A transgenic Saccharomyces cerevisiae was constructed containing the cDNAs coding for strictosidine synthase (STR) and strictosidine beta-glucosidase (SGD) from the medicinal plant Catharanthus roseus. Both enzymes are involved in the biosynthesis of terpenoid indole alkaloids. The yeast culture was found to express high levels of both enzymes.
A, Geerlings +5 more
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Advance in biosynthesis of terpenoid indole alkaloids and its regulation in Catharanthus roseus
China Journal of Chinese Materia Medica, 2016Catharanthus roseus can produce a variety of terpenoid indole alkaloids (TIA), most of which exhibit strong pharmacological activities. Hence, biosynthesis and regulation of TIA have received recent attention. 3α (S)-strictosidine is an important node in TIA biosynthesis, which is a condensation product of secologanin and tryptamine.
Xue-Jun, Kuang +4 more
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Alkaloids of Terpenoid Origin (excepting indole alkaloids and ergot alkaloids)
1998A large number of alkaloids are based on terpenoid structures. In most instances, the source of the nitrogen is not established, but the remaining portions of the molecule typically arise via the pathways leading to the various groups of terpenes.
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Terpenoid Indole Alkaloids Biosynthesis and Metabolic Engineering in Catharanthus roseus
Journal of Integrative Plant Biology, 2007Abstract Catharanthus roseus L. (Madagascar periwinkle) biosynthesizes a diverse array of secondary metabolites including anticancer dimeric alkaloids (vinblastine and vincristine) and antihypertensive alkaloids (ajmalicine and serpentine). The multi‐step terpenoid indole alkaloids (TIAs) biosynthetic pathway in C. roseus is complex and is
Dong‐Hui Liu +6 more
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