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decarboxylase/tabak
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Seite 1 von 89 Ergebnisse
Nucleotide sequence of the tryptophan decarboxylase gene of Catharanthus roseus and expression of tdc-gusA gene fusions in Nicotiana tabacum.
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The enzyme tryptophan decarboxylase (TDC; EC 4.1.1.28) converts tryptophan into tryptamine. In Catharanthus roseus and other plants capable of producing terpenoid indole alkaloids (TIAs) TDC links primary metabolism to the secondary metabolic pathway involved in the biosynthesis of these compounds.
Cloning and characterization of a rice cDNA encoding glutamate decarboxylase.
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In this study, we have isolated a rice (Oryza sativa L.) glutamate decarboxylase (RicGAD) clone from a root cDNA library, using a partial Arabidopsis thaliana GAD gene as a probe. The rice root cDNA library was constructed with mRNA, which had been derived from the roots of rice seedlings subjected
Expression of a bacterial lysine decarboxylase gene and transport of the protein into chloroplasts of transgenic tobacco.
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A possible approach for altering alkaloid biosynthesis in plants is the expression of genes encoding key enzymes of a pathway such as lysine decarboxylase (ldc) in transgenic plants. Two strategies were followed here: one focused on expression of the gene in the cytoplasm, the other on subsequent
Effects of putrescine accumulation in tobacco transgenic plants with different expression levels of oat arginine decarboxylase.
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Arginine decarboxylase (ADC; EC 4.1.1.19) is a key enzyme in one of the two possible ways to synthesize putrescine (Put) in plants. In previous work (Masgrau et al. 1997), we observed an altered phenotype (growth inhibition, leaf chlorosis and necrosis) in tobacco transgenic plants (Nicotiana
Reduction of Uroporphyrinogen Decarboxylase by Antisense RNA Expression Affects Activities of Other Enzymes Involved in Tetrapyrrole Biosynthesis and Leads to Light-Dependent Necrosis.
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We introduced a full-length cDNA sequence encoding tobacco (Nicotiana tabacum) uroporphyrinogen III decarboxylase (UROD; EC 4.1.1.37) in reverse orientation under the control of a cauliflower mosaic virus 35S promoter derivative into the tobacco genome to study the effects of deregulated UROD
Isolation, sequencing and expression of cDNA sequences encoding uroporphyrinogen decarboxylase from tobacco and barley.
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We have cloned and sequenced a full-length cDNA for uroporphyrinogen decarboxylase (UROD, EC 4.1.1.37) from tobacco (Nicotiana tabacum L.) and a partial cDNA clone from barley (Hordeum vulgare L.). The cDNA of tobacco encodes a protein of 43 kDa, which has 33% overall similarity to UROD sequences
The transcript-level-independent activation of ornithine decarboxylase in suspension-cultured BY2 cells entering the cell cycle.
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The regulation of ornithine decarboxylase (ODC) expression was studied in suspension-cultured tobacco (Nicotiana tabacum L.) BY2 cells. ODC activity increased rapidly 3 h after cells re-entered the cell cycle from the stationary phase, corresponding to the G1 phase, and continued to increase in the
Expression of a human S-adenosylmethionine decarboxylase cDNA in transgenic tobacco and its effects on polyamine biosynthesis.
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S-adenosylmethionine decarboxylase (SAMDC; EC 4.1.1.50) is a key regulatory enzyme in the polyamine biosynthetic pathway. Numerous studies have shown that the enzyme activity and polyamine levels are generally correlated with cellular growth in plants, animals and bacteria. In order to gain more
Calcium/calmodulin activation of two divergent glutamate decarboxylases from tobacco.
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Glutamate decarboxylase (GAD, EC 4.1.1.15) catalyses the alpha-decarboxylation of glutamate to produce gamma-aminobutyrate (GABA). The nucleotide sequences of two divergent GADs (designated GAD1 and GAD3) were isolated from a Nicotiana tabacum L. cv. Samsun NN leaf cDNA library. Open reading frames
Wound-inducible biosynthesis of phytoalexin hydroxycinnamic acid amides of tyramine in tryptophan and tyrosine decarboxylase transgenic tobacco lines.
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The wound-activated biosynthesis of phytoalexin hydroxycinnamic acid amides of tyramine was compared in untransformed and transgenic tobacco (Nicotiana tabacum) lines that express tryptophan decarboxylase (TDC), tyrosine decarboxylase (TYDC), or both activities. Transgenic in vitro-grown tobacco
Effects of the suicide inhibitors of arginine and ornithine decarboxylase activities on organogenesis, growth, free polyamine and hydroxycinnamoyl putrescine levels in leaf explants of Nicotiana xanthi N.C. Cultivated in vitro in a medium producing callus formation.
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We studied the effects of dl-alpha-difluoromethylarginine (DFMA) and dl-alpha-difluoromethylornithine (DFMO), specific, irreversible inhibitors of arginine decarboxylase (ADC) and ornithine decarboxylase (ODC), respectively, on organogenesis growth and titers of free polyamines and conjugated
Improved metabolic action of a bacterial lysine decarboxylase gene in tobacco hairy root cultures by its fusion to a rbcS transit peptide coding sequence.
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The gene of a bacterial lysine decarboxylase (ldc) fused to a rbcS transit peptide coding sequence (tp), and under the control of the CaMV 35S promoter, was expressed in hairy root cultures of Nicotiana tabacum. The fusion of the ldc to the targeting signal sequence improved the performance of the
Modulation of cellular polyamines in tobacco by transfer and expression of mouse ornithine decarboxylase cDNA.
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In an attempt to modulate the metabolism of polyamines in plants, Agrobacterium tumefaciens strains were produced which contained either a full-length or a 3'-truncated mouse ornithine decarboxylase (ODC) cDNA under the control of the cauliflower mosaic virus 35S promoter. Plants of Nicotiana
Plant tyrosine decarboxylase can be strongly inhibited by L-α-aminooxy-β-phenylpropionate.
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Tyrosine decarboxylase (EC 4.1.1.25) from Syringa vulgaris L. cell cultures and from Hordeum vulgare L. seedlings is strongly inhibited by the phenylalanine analogue, L-α-aminooxy-β-phenylpropionate. L-α-Aminooxy-β-phenylpropionate is therefore not specific in its inhibitory action against
High levels of tryptamine accumulation in transgenic tobacco expressing tryptophan decarboxylase.
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A full-length complementary DNA clone encoding tryptophan decarboxylase (TDC; EC 4.1.1.28) from Catharanthus roseus (De Luca V, Marineau C, Brisson N [1989] Proc Natl Acad Sci USA 86: 2582-2586) driven by the CaMV 35S promoter was introduced into tobacco (Nicotiana tabacum) to direct the synthesis
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