Epoxide Hydrolases
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Aplicação de triagem de alto desempenho na investigação das atividades enzimaticas e enantiosseletividades de microorganismos brasileiros / Enzymatic activities and Quick E in hydrolases screening appyng fluorescent probes
Nas últimas décadas as reações utilizando biocatalisadores tem sido amplamante aplicadas na síntese orgânica, como componentes chave de muitos processos químicos industriais, levando ao aumento na demanda por novas enzimas. A maneira mais rápida e simples de detectar enzimas é através de metodologias de triagem de alto desempenho (HTS) que permitam
Publicado em: 2007
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2. High-throughput screening in enzyme assays for epoxide hydrolases and monooxygenases activity detection using whole cell / Triagem de alto desempenho para detecção de atividade de epoxido-hidrolases e monooxigenases utilizando celulas integras
Biocatalysis is a multidisciplinary area, where new technologies are developing rapidly in order to offer unique options and solutions to different organic chemistry problems, complementing the classical synthetic chemistry. Facing the need imposed by progress in this area, this project aims at the implementation of high-throughput screening (HTS) methodolog
Publicado em: 2006
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3. Studies on whole cell fluorescence-based screening for epoxide hydrolases and Baeyer-Villiger monoxygenases
Reações de biocatálise foram realizadas em microplacas (200 µL) visando a utilização de substratos fluorogênicos (100 µmol L-1) para prospecção rápida de epóxido hidrolases (EHs) e Baeyer-Villiger monoxigenases (BVMOs) em microrganismos (células inteiras). Um protocolo final foi alcançado para EHs, com a detecção de 3 novas fontes enzimática
Journal of the Brazilian Chemical Society. Publicado em: 2004-12
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4. Limonene-1,2-Epoxide Hydrolase from Rhodococcus erythropolis DCL14 Belongs to a Novel Class of Epoxide Hydrolases
An epoxide hydrolase from Rhodococcus erythropolis DCL14 catalyzes the hydrolysis of limonene-1,2-epoxide to limonene-1,2-diol. The enzyme is induced when R. erythropolis is grown on monoterpenes, reflecting its role in the limonene degradation pathway of this microorganism. Limonene-1,2-epoxide hydrolase was purified to homogeneity. It is a monomeric cytopl
American Society for Microbiology.
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5. Structure of Rhodococcus erythropolis limonene-1,2-epoxide hydrolase reveals a novel active site
Epoxide hydrolases are essential for the processing of epoxide-containing compounds in detoxification or metabolism. The classic epoxide hydrolases have an α/β hydrolase fold and act via a two-step reaction mechanism including an enzyme–substrate intermediate. We report here the structure of the limonene-1,2-epoxide hydrolase from Rhodococcus erythropoli
Oxford University Press.
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6. Potent urea and carbamate inhibitors of soluble epoxide hydrolases
The soluble epoxide hydrolase (sEH) plays a significant role in the biosynthesis of inflammation mediators as well as xenobiotic transformations. Herein, we report the discovery of substituted ureas and carbamates as potent inhibitors of sEH. Some of these selective, competitive tight-binding inhibitors with nanomolar Ki values interacted stoichiometrically
The National Academy of Sciences.
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7. Multiple Epoxide Hydrolases in Alternaria alternata f. sp. lycopersici and Their Relationship to Medium Composition and Host-Specific Toxin Production
The production of Alternaria alternata f. sp. lycopersici host-specific toxins (AAL toxins) and epoxide hydrolase (EH) activity were studied during the growth of this plant-pathogenic fungus in stationary liquid cultures. Media containing pectin as the primary carbon source displayed peaks of EH activity at day 4 and at day 12. When pectin was replaced by gl
American Society for Microbiology.
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8. Purification and Characterization of Two Epoxide Hydrolases from Corynebacterium sp. Strain N-1074
Enzymes IIa and IIb, which catalyze the conversion of epichlorohydrin (ECH) to 3-chloro-1,2-propanediol (MCP), were purified from Corynebacterium sp. strain N-1074, which catalyzes the formation of (R)-MCP from prochiral 1,3-dichloro-2-propanol via ECH. The specific activity of enzyme IIa for the formation of MCP from ECH was about 6.4-fold higher than that
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9. Inhibitors of soluble epoxide hydrolase attenuate vascular smooth muscle cell proliferation
Atherosclerosis, in its myriad incarnations the foremost killer disease in the industrialized world, is characterized by aberrant proliferation of vascular smooth muscle (VSM) cells in part as a result of the recruitment of inflammatory cells to the blood vessel wall. The epoxyeicosatrienoic acids are synthesized from arachidonic acid in a reaction catalyzed
The National Academy of Sciences.
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10. Molecular cloning and amino acid sequence of leukotriene A4 hydrolase.
A cDNA clone corresponding to leukotriene A4 hydrolase was isolated from a human lung lambda gt11 expression library by immunoscreening with a polyclonal antiserum. Several additional clones from human lung and placenta cDNA lambda g11 libraries were obtained by plaque hybridization with the 32P-labeled lung cDNA clone. One of these clones has an insert of 1
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11. Leukotriene A4 hydrolase: abrogation of the peptidase activity by mutation of glutamic acid-296.
The metal-binding motif in the sequence of leukotriene A4 (LTA4) (EC 3.3.2.6), a bifunctional zinc metalloenzyme, contains a glutamic acid that is conserved in several zinc hydrolases. To study its role for the two catalytic activities, Glu-296 in mouse leukotriene A4 hydrolase was replaced by a glutamine or alanine residue by site-directed mutagenesis. Wild