Maleimide
Mostrando 1-12 de 122 artigos, teses e dissertações.
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1. Electron paramagnetic resonance study of lipid and protein membrane components of erythrocytes oxidized with hydrogen peroxide
Electron paramagnetic resonance (EPR) spectroscopy of spin labels was used to monitor membrane dynamic changes in erythrocytes subjected to oxidative stress with hydrogen peroxide (H2O2). The lipid spin label, 5-doxyl stearic acid, responded to dramatic reductions in membrane fluidity, which was correlated with increases in the protein content of the membran
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-06
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2. Nitrile rubber - based nanocomposites prepared by melt mixing: effect of the mixing parameters on mechanical, dynamic-mechanical and creep behavior
Nanocomposites constituted by nitrile rubber matrix and Cloisite 15A (OC15A) as the organoclay were prepared by melt blending and cured with the m-phenylene-bis-maleimide (BMI)/dicumyl peroxide (DCP) system. The effect of mixing parameters on the clay dispersion was evaluated, including mixing temperature and time, and rotor speed of the internal mixer. The
Polímeros. Publicado em: 26/11/2010
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3. Efeitos de terpenos nas membranas de estrato córneo estudados por ressonância paramagnética eletrônica / Effects of terpenes on the stratum corneum membranes studied by electron paramagnetic resonance
The interaction of the skin penetration enhancers DL-menthol, -terpineol, 1,8-cineole and (+)-limonene with membranes of the uppermost skin layer, the stratum corneum (SC) and with multilamellar vesicles from 1,2-dipalmitoyl-sn-glycero-3-phosphaticylcholine (DPPC)is investigated by electron paramagnetic resonance (EPR) spectroscopy using spin-labeled
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/02/2008
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4. Estudo teÃrico da maleimida, seus dÃmeros e trÃmeros / Theoretical Study of Maleimide, its Dimers and Trimers
In this work we have performed MP2 and B3LYP molecular orbital calculations with a 6-31++G(d,p) basis set to analyze and interpret the infrared spectrum of maleimide and its possible hydrogen complexes (dimers and trimers), including their stabilization energies, intermolecular charge transfers and geometric modifications due complexation. The infrared spect
Publicado em: 2008
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5. SYNTHESIS OF 3-ALKOXY-3-CYANOPROPANOIC ACIDS, 2-CYANO TETRAHYDROFURAN(2H-PYRAN)-3-CARBOXYLIC ACIDS AND THEIR APPLICATION TO THE SYNTHESIS OF THE RESPECTIVE SUCCINAMIC ACIDS AND SUCCINIC ACIDS / SÍNTESE DE ÁCIDOS 3-ALCÓXI-3-CIANOPROPANÓICOS, ÁCIDOS 2-CIANO TETRAIDROFURAN(2H-PIRAN)-3-ÓICOS E SUA APLICAÇÃO NA OBTENÇÃO DOS RESPECTIVOS ÁCIDOS SUCCINÂMICOS E SUCCÍNICOS
This work presents the synthesis of a series of 3-alkoxy-3-cyanopropanoic acids and 2-cyanotetrahydrofuran(2H-pyran)-3-carboxylic acids of general formula HO2CCH(R2)CR1(OR)CN, where R/R2= Et/H, Et/Me, -(CH2)2-, -(CH2)3-, iso-Pr/H, sec- Bu/H, iso-Pr/Me, sec-Bu/Me and R1= H, obtained through the reaction of β-alkoxyvinyl trichloromethyl ketones [Cl3CCOC(R
Publicado em: 2007
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6. The application of the Diels-Alder reaction to polymer syntheses based on furan/maleimide reversible couplings
The furan heterocycle is a dienic reagent particularly suitable for the Diels-Alder reaction and maleimides represent a typical family of complementary reagents because of their strong dienophilic character. This paper reviews critically the studies devoted to the exploitation of the Diels Alder reaction between those moieties to synthesise macromolecular ma
Polímeros. Publicado em: 2005-06
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7. The Michael Reaction of Enaminones with N-(p-tolyl)-maleimide: Synthesis and Structural Analysis of Succinimide-enaminones
Succinimido enaminonas foram sintetizadas através da reação de enaminonas e a N-(p-toluil)-maleimida em rendimento moderado a bom. A ação antibacteriana destes compostos contra E. coli e S. aureus foi avaliada, mas a atividade antibacteriana não foi significativa. A regioquímica das succinimido enaminonas foi racionalizada empregando-se a teoria dos o
Journal of the Brazilian Chemical Society. Publicado em: 2002-09
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8. Maleimide-mediated protein conjugates of a nucleoside triphosphate gamma-S and an internucleotide phosphorothioate diester.
The purpose of this study was to determine whether the gamma-S of nucleoside thiotriphosphates and the non-bridging sulfur of internucleotide phosphorothioate diesters possess sufficient thiol character to form adducts with maleimides. Adenosine triphosphate gamma-S (ATPS) and thymidyl-PS-thymidine (TPST) were each reacted with the reporter molecule N-1 pyre
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9. A NITROXIDE-MALEIMIDE SPIN LABEL*
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10. X-ray photoelectron spectroscopy and infrared spectroscopy study of maleimide-activated supports for immobilization of oligodeoxyribonucleotides
Surface-tethered nucleic acids are widely applied in solid-phase assays in which complementary strands must be detected against a complex mixture of other sequences. In response to such needs, numerous methods have been developed for immobilizing nucleic acids on solid supports. Often, detailed analysis of associated chemical transformations and of potential
Oxford University Press.
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11. Vimentin Filaments in Fibroblasts Are a Reservoir for SNAP23, a Component of the Membrane Fusion Machinery
Soluble N-ethyl maleimide-sensitive fusion protein attachment protein receptors (SNAREs) are core machinery for membrane fusion during intracellular vesicular transport. Synaptosome-associated protein of 23 kDa (SNAP23) is a target SNARE previously identified at the plasma membrane, where it is involved in exocytotic membrane fusion. Here we show that S
The American Society for Cell Biology.
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12. MATE1 has an external COOH terminus, consistent with a 13-helix topology
The mammalian members of the Multidrug And Toxin Extruder family, i.e., MATE1 and MATE2-K, are suspected of mediating the luminal step in renal secretion of organic cations. The 1,000+ prokaryotic/fungal/plant MATE family members are predicted to have 12 transmembrane helices (TMHs), whereas MATE1/2-K appear to have an additional (13th) COOH-terminal helix.
American Physiological Society.