Nucleotide Synthesis
Mostrando 13-24 de 2008 artigos, teses e dissertações.
-
13. Evaluation of the chemical composition of the cell wall of transgenic tobacco plants (Nicotiana tabacum) that superexpress the gene ugdh, that codes for the enzyme UDPglucose dehydrogenase (EC 1.1.1.22) / Avaliação da composição química da parede celular de plantas de tabaco (Nicotiana tabacum) que superexpressam o gene ugdh de soja, que codifica a enzima UDP-glicose desidrogenase (EC 1.1.1.22)
The cellular elements that constitute the xylematic tissue of various plant species are widely used in diverse industrial sectors, with numerous applications, for example, the generation of energy and production of cellulose and paper. Plant cell walls are basically formed by cellulose, hemicellulose and lignin. The formation of cellulose and hemicellulose p
Publicado em: 2007
-
14. Clonagem e caracterização do gene da enzima Δ6-dessaturase de ácido graxo e análise de parte do genoma funcional de Thalassiosira fluviatilis
Omega 3 polyunsaturated fatty acids are molecules found in oils that are of fundamental importance in the maintenance of human health, that need to be consumed by the humans. Special attention is given to the omega 3 long chain polyunsaturated fatty acids (LCPUFAs), like eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) due to their influence in the
Publicado em: 2007
-
15. Diagnóstico sorológico de herpesvírus bovino 1 e 5: proteínas virais, recombinantes e peptídeos sintéticos em suportes sólidos comerciais e modificados por engenharia de superficie.
Bovine herpesvirus 1 (BoHV-1) and Bovine herpesvirus 5 (BoHV-5) are distributed around the world and causes great economic impact, needing hard disease control programs. These viruses share a high homology at nucleotide and aminoacide level. Due to this great similarity few serological methodologies to carry out differential diagnosis that can distinguish bo
Publicado em: 2006
-
16. Analysis diferential gene expression of skeletal muscular cells from a primary culture infected with tackyzoites of toxoplasma gondii. / Análise diferencial da expressão gênica de cultura primária de células musculares esqueléticas durante a infecção com taquisoítos de toxoplasma gondii.
The microarray technique is a powerful tool to analyze the changes in gene expression occurring during an infectious process caused by a pathogen. This work aims to study the biological process of interaction between a host cell and an intracellular parasite, Toxoplasma gondii, at a transcriptional level, using a high density microarray (Genechip) Samples we
Publicado em: 2006
-
17. Isolation and characterization of the full-length cDNA encoding a member of a novel cytochrome p450 family (CYP320A1) from the tropical freshwater snail, Biomphalaria glabrata, intermediate host for Schistosoma mansoni
Cytochrome p450s (cyp450s) are a family of structurally related proteins, with diverse functions, including steroid synthesis and breakdown of toxins. This paper reports the full-length sequence of a novel cyp450 gene, the first to be isolated from the tropical freshwater snail Biomphalaria glabrata, an important intermediate host of Schistosoma mansoni. The
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-05
-
18. Eucalyptus ESTs associated with resistance to herbicide inhibitors of aromatic and branched-chain amino acid synthesis
Herbicides inhibit enzymatic systems of plants. Acetolactate synthase (ALS, EC = 4.1.3.18) and 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS, EC 2.5.1.19) are key enzymes for herbicide action. Hundreds of compounds inhibit ALS. This enzyme is highly variable, enabling the selective control of weeds in a number of crops. Glyphosate, the only commercial h
Genetics and Molecular Biology. Publicado em: 2005
-
19. Glutamine and glutamate as vital metabolites
Glucose is widely accepted as the primary nutrient for the maintenance and promotion of cell function. This metabolite leads to production of ATP, NADPH and precursors for the synthesis of macromolecules such as nucleic acids and phospholipids. We propose that, in addition to glucose, the 5-carbon amino acids glutamine and glutamate should be considered to b
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02
-
20. Estudo do efeito da dobutamina (Dobutrex) R e da radiação laser sobre a ação hidrosmotica da vasopressina em bexiga de sapo "in vitro"
In the present work the effects of several pharmacological agents in special Dobutamine and a physical agent-Laser radiation - on the events that follow the interaction of Vasopressin with membrane receptors related to syn¬thesis and inactivation of cyclic-AMP in the toad bladder, are described and characterized. Water flow across the membrane was measured
Publicado em: 1991
-
21. Effect of histidine on purine nucleotide synthesis and utilization in Neurospora crassa.
Histidine affects de novo purine nucleotide synthesis and purine nucleotide pool utilization in Neurospora crassa. The former effect was assessed qualitatively by the presence or absence of purple pigment production in ad3B and ad3A mutants. Tryptophan also affected the de novo purine nucleotide synthesis. The effect of histidine on purine nucleotide pool ut
-
22. Nucleotide pools and regulation of ribonucleic acid synthesis in yeast.
Nucleotide pools were measured in growing and amino acid-starved Saccharomyces cerevisiae. During amino acid starvation there are neither significant changes in the endogeneous nucleoside triphosphate pool levels nor measurable synthesis of guanosine 5'-diphosphate, 3'-diphosphate. Stable ribonucleic acid synthesis does not appear to be regulated by changes
-
23. Nucleotide and divalent cation specificity of in vitro iron-molybdenum cofactor synthesis.
The nucleotide and divalent cation requirements of the in vitro iron-molybdenum cofactor (FeMo-co) synthesis system have been compared with those of substrate reduction by nitrogenase. The FeMo-co synthesis system specifically requires ATP, whereas both 1,N6-etheno-ATP and 2'-deoxy-ATP function in place of ATP in substrate reduction (M. F. Weston, S. Kotake,
-
24. Stimulation of Enzyme Synthesis by Sublethal Concentrations of Chloramphenicol Is Not Mediated by Ribonucleotide Pools
Growth of Salmonella typhimurium LT-2 strain pyrA81 in minimal medium containing 0.8 μg of chloramphenicol (CAP) per ml resulted in a 50 to 100% increase in the steady-state nucleotide pools in the cells. When such a culture was starved for uracil, the pyrimidine nucleotide pools decayed much more slowly in CAP-treated cells than in controls. An attempt was