Tkt
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Polimorfismos nos genes que codificam a glutationa peroxidase-4, a tiorredoxina e a proteína de interação com a tiorredoxina modulam a susceptibilidade à doença renal em portadores de diabetes mellitus tipo 1 / Polymorphisms in the genes coding for glutathione peroxidase-4, thioredoxin and thioredoxin interaction protein modulate the risk for renal disease in type 1 diabetes patients
INTRODUÇÃO: evidências sugerem a participação de fatores genéticos na susceptibilidade para o desenvolvimento das complicações renais em pacientes portadores de diabetes mellitus tipo 1 (DM1). Vários genes relacionados às vias bioquímicas induzidas pela hiperglicemia têm sido investigados e o estresse oxidativo foi reconhecido como o principal me
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2012
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2. Assessing EFL teachers competencies: a study on the validity of an international certification / Avaliando as competências dos professores de língua estrangeira (inglês): um estudo sobre a validade de uma certificação internacional
Given the inexistence in Brazil of a national certification instrument for Teachers of English as a Foreign Language, the object of this study was the international exam Teaching Knowledge Test(TKT), with a view to establishing if an objective, receptive, discrete-point and criterion-based test (HUGHES, 1989; ALDERSON et al,1995), designed for the global mar
Publicado em: 2009
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3. MÃtodo de Monte Carlo para o estudo de Sistemas MagnÃticos Bidimensionais. / Monte Carlo Method for the Study of two-dimensional Magnetic Systems
Empregando o MÃtodo de Monte Carlo, estudamos sistemas magnÃticos bidimensionais. A transiÃÃo de fase, que ocorre no modelo de Ising, foi tambÃm investigada para o modelo XY bidimensional, ou geralmente chamado na literatura de 2D XY. Observa-se neste modelo uma transiÃÃo nÃo-usual do tipo Kosterlitz-Thouless-Berezinskii, envolvendo vÃrtices de spin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2008
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4. Exame internacional para professores de inglês : uma análise na perspectiva sócio-interacionista
The introduction of the Teaching Knowledge Test exam (TKT) in Brazil in 2004 raised again the controversial issue of the need or not of having a special exam to certify the English teachers knowledge in our country, as the exam was considered by some as an option for that purpose. Bearing that in mind, the general aim of this research was to verify to what e
Publicado em: 2007
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5. Avaliação clinica da utilização do enxerto de matriz dermica acelular (AlloDerm) em retrações gengivais
The aim of this study was to clinically evaluate the coverage of gingival recessions treated by an acellular dermal matrix allograft" (ADMA - test group), used as subepithelial connective tissue graft and compared it to the coronally repositioned flap (CRF - control group). Paired gingival recessions of ~ 3,Omm, Miller s class I, in upper canines or premolar
Publicado em: 2003
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6. Transketolase Haploinsufficiency Reduces Adipose Tissue and Female Fertility in Mice
Transketolase (TKT) is a ubiquitous enzyme used in multiple metabolic pathways. We show here by gene targeting that TKT-null mouse embryos are not viable and that disruption of one TKT allele can cause growth retardation (≈35%) and preferential reduction of adipose tissue (≈77%). Other TKT+/− tissues had moderate (≈33%; liver, gonads) or relatively l
American Society for Microbiology.
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7. Identification and characterization of the tktB gene encoding a second transketolase in Escherichia coli K-12.
We isolated a transposon Tn10 insertion mutant of Escherichia coli K-12 which could not grow on MacConkey plates containing D-ribose. Characterization of the mutant revealed that the level of the transketolase activity was reduced to one-third of that of the wild type. The mutation was mapped at 63.5 min on the E. coli genetic map, in which the transketolase
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8. The transketolase gene family of the resurrection plant Craterostigma plantagineum: differential expression during the rehydration phase.
Transketolases, key enzymes of the reductive and oxidative pentose phosphate pathways, are responsible for the synthesis of sugar phosphate intermediates. Here we report the first molecular analysis of transketolase genes from plants. Three distinct classes of transketolase-encoding cDNA clones were isolated from the desiccation-tolerant resurrection plant C
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9. Dedicated Roles of Plastid Transketolases during the Early Onset of Isoprenoid Biogenesis in Pepper Fruits1
Isopentenyl diphosphate (IPP), which is produced from mevalonic acid or other nonmevalonic substrates, is the universal precursor of isoprenoids in nature. Despite the presence of several isoprenoid compounds in plastids, enzymes of the mevalonate pathway leading to IPP formation have never been isolated or identified to our knowledge. We now describe t
American Society of Plant Physiologists.
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10. Upregulation of Tyrosine Kinase TKT by the Epstein-Barr Virus Transactivator Zta
The Zta protein is a key transactivator involved in initiating the Epstein-Barr virus (EBV) lytic cascade. In addition to transactivating many viral genes, Zta has the capacity to influence host cellular signals by binding to promoter regions or by interacting with several important cellular factors. Based on the observation that tyrosine kinases play centra
American Society for Microbiology.
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11. An Escherichia coli K-12 tktA tktB mutant deficient in transketolase activity requires pyridoxine (vitamin B6) as well as the aromatic amino acids and vitamins for growth.
We show that a tktA tktB double mutant, which is devoid of the two known transketolase isoenzymes of Escherichia coli K-12, requires pyridoxine (vitamin B6) as well as the aromatic amino acids and vitamins for growth. This pyridoxine requirement can also be satisfied by 4-hydroxy-L-threonine or glycolaldehyde. These results provide direct evidence that D-ery
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12. Location of the transketolase (tkt) gene on the Escherichia coli physical map.