Analogous Enzyme
Mostrando 1-12 de 296 artigos, teses e dissertações.
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1. Searching for convergent evolution in manganese superoxidase dismutase using hydrophobic cluster analysis
There are numerous examples of convergent evolution in nature. Major ecological adaptations such as flight, loss of limbs in vertebrates, pesticide resistance, adaptation to a parasitic way of life, etc., have all evolved more than once, as seen by their analogous functions in separate taxa. But what about protein evolution? Does the environment have a stron
Genet. Mol. Biol.. Publicado em: 13/05/2014
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2. Silenciamento mediado por RNA interferente do gene sbe1 que codifica para a Enzima de Ramificação do Amido I (SBE I) em Milho (Zea mays L.)
Maize is a very important world-wide economic crop. The starch contained in its grains is highly used in human nutrition, animal feeding and fuel industry. Starch is composed of two types of structurally different glucose polymers: amylose, constituted by linear chain, hardwired for glucosidic linkage a-1,4; and amylopectin with glucosidic linkage a-1,4 and
Publicado em: 2008
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3. Computational methods applied to the genomes of the mycobacteria and trypanosomatids: of the assembly to the notation. / Abordagens computacionais aplicadas aos genomas de micobactérias e Trypanossomatídeos : da montagem à anotação.
Esta dissertação trata do desenvolvimento de novas abordagens e ferramentas computacionais focadas nas seguintes aplicações: aperfeiçoamento do fluxo de informação de Plataformas Tecnológicas de Seqüenciamento e de Bioinformática; montagem de seqüências em projetos genomas; detecção de seqüências repetitivas; análise comparativa e anotação
Publicado em: 2008
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4. Análise de Impacto do Polimorfismo Genético do Subtipo C do HIV-1 na Interação da Protease Viral com o Inibidor Nelfinavir por Modelagem e Dinâmica Molecular / Analyse the Impact of Genetic Polymorphism of subtype C of HIV-1 Protease Inhibitors in the Interaction Viral With the Inhibitor Nelfinavir by Modeling and Molecular Dynamics
The human immunodeficiency virus (HIV) can be divided into HIV-1 and HIV-2. The former can be divided into groups: M, N and O. Group M, which represents 90% of infections, is divided into several subtypes (A, B, C, D, F, G, H, J and K). It is known today that the most prevalent subtype in the world (and in Africa) is the subtype C, although the most studied
Publicado em: 2008
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5. Termorregulação colonial e energética individual em abelhas sem ferrão Melipona quadrifasciata Lepeletier (Hymenoptera, Apidae, Meliponini) / Colonial thermoregulation and energetics in stingless bees Melipona quadrifasciata Lepeletier (Hymenoptera, Apidae, Meliponini).
In eusocial insects, such as stingless bees, the control of nest conditions and maintenance of the colonial microclimate are important to brood incubation, development of eggs, larvae and pupae, and survival of the colony. One of the main thermoregulatory mechanisms to control nest temperature is the microhabitat selection to build the nest, such as tree hol
Publicado em: 2008
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6. Identificação, classificação e anotação de enzimas análogas em tripanossomatídeos / Identificação, classificação e anotação de enzimas análogas em tripanossomatídeos / Identification, classification and notation of analogous enzyme in Trypanosoma / Identification, classification and notation of analogous enzyme in Trypanosoma
Enzymes are proteins capable of catalyzing chemical reactions. Analogous enzymes are alternative forms of a determined enzymatic function, and are interesting subjects for the development of studies about the evolution of genes and metabolic pathways. Analogous enzymes also represent potential drug targets, since the criteria for searching and selecting thes
Publicado em: 2006
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7. Reaction of diphenyl diselenide with hydrogen peroxide and inhibition of delta-aminolevulinate dehydratase from rat liver and cucumber leaves
The interaction of the product of H2O2 and (PhSe)2 with delta-aminolevulinate dehydratase (delta-ALA-D) from mammals and plants was investigated. (PhSe)2 inhibited rat hepatic delta-ALA-D with an IC50 of 10 µM but not the enzyme from cucumber leaves. The reaction of (PhSe)2 with H2O2 for 1 h increased the inhibitory potency of the original compound and the
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-06
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8. Transformação de carbociclo em carboidrato : rotas sinteticas para analogos de açucares superiores
In this work are described methodologies for a synthetic pathway that aim the transformation of a carbocycle in a high carbohydrate (more than 6 atoms of C in its chain). The carbohydrate in study is interesting for the preparation of sialic acid analogous (carbohydrates with 9C), being the N-acetilneuraminic acid the most known among them. The purpose of th
Publicado em: 2001
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9. Purification and characterization of 6-chlorohydroxyquinol 1,2-dioxygenase from Streptomyces rochei 303: comparison with an analogous enzyme from Azotobacter sp. strain GP1.
The enzyme which cleaves the benzene ring of 6-chlorohydroxyquinol was purified to apparent homogeneity from an extract of 2,4,6-trichlorophenol-grown cells of Streptomyces rochei 303. Like the analogous enzyme from Azotobacter sp. strain GP1, it exhibited a highly restricted substrate specificity and was able to cleave only 6-chlorohydroxyquinol and hydroxy
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10. Enzymes Involved in Anaerobic Polyethylene Glycol Degradation by Pelobacter venetianus and Bacteroides Strain PG1
In extracts of polyethylene glycol (PEG)-grown cells of the strictly anaerobically fermenting bacterium Pelobacter venetianus, two different enzyme activities were detected, a diol dehydratase and a PEG-degrading enzyme which was characterized as a PEG acetaldehyde lyase. Both enzymes were oxygen sensitive and depended on a reductant, such as titanium citrat
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11. 3-Deoxy-d-arabino-Heptulosonate 7-Phosphate Synthase from Potato Tuber (Solanum tuberosum L.) 1
3-Deoxy-d-arabino-heptulosonate 7-phosphate synthase, the first enzyme of the shikimate pathway, was purified to electrophoretic homogeneity from tubers of Solanum tuberosum L. cv Superior. The enzyme is a dimer with a native molecular weight of 110,000. The enzyme appears to be hysteretic. The enzyme activity is stimulated by Mn2+ and l-tryptophan. Chromato
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12. Alternative view of enzyme reactions.
Since adsorption of the substrate in the active site of an enzyme can occur only if all solvent is squeezed out from between them, any reaction between them takes place in the absence of any intervening solvent--i.e., as it would in the gas phase. Recent work has shown that ionic reactions in the gas phase often differ greatly from analogous processes in sol