Dimerization
Mostrando 1-12 de 1354 artigos, teses e dissertações.
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1. Polyurethanes Obtained by Reacting 1,6-HDI with Monoglycerides from Babassu Oil: A DFT Study
This is a density functional theory (DFT)-based (M06) study on the polyurethane formation from 1,6-hexamethylenediisocyanate (1,6-HDI) reacting with the monoacylglycerol obtained from the babassu oil. As the lauric acid is the most abundant fatty acid in the vegetable oil, the 2-monolaurin was chosen to scrutinize the polyurethane formation. An analysis of t
J. Braz. Chem. Soc.. Publicado em: 2020-09
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2. Effects of the Structure and Composition of Montmorillonite on the Dimerization of Unsaturated Fatty Acids
The effects of structure and composition of different montmorillonites on their catalytic performance in the dimerization of unsaturated fatty acids were investigated. The dimerization reaction was performed at 240 ºC for 3 h, with montmorillonite as catalyst, and LiCl as the co-catalyst. The results showed that the specific surface areas of the different m
J. Braz. Chem. Soc.. Publicado em: 2018-07
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3. Exploring the natural chemiome to target interleukin-6 receptor (IL-6R) cytokines: an atomic scale investigation for novel rheumatoid arthritis drug discovery
ABSTRACT Natural compounds are a gold mine for treating rheumatoid arthritis (RA). The etiology of this disease is linked to inflammation, where cytokines play an important role. Strategies have been drafted for targeting cytokines as a therapeutic option in patients with RA. Inhibiting cytokines with natural compounds has become a major focus for the develo
Braz. J. Pharm. Sci.. Publicado em: 01/02/2018
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4. Molecular biology of human epidermal receptors, signaling pathways and targeted therapy against cancers: new evidences and old challenges
ABSTRACT Human epidermal receptors (HER1/2/3/4) belong to the class of receptor-type tyrosine kinases. After binding a ligand, dimerization, it will ocurr activation of intracellular kinases after two-dimensional and cytoplasmic tail reciprocal transphosphorylation. This transphosphorylation recruits signaling pathways such as Ras/Raf/MEK/Erk1-2, PI3-K/AKT a
Braz. J. Pharm. Sci.. Publicado em: 20/07/2017
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5. Crucial Residues Modulating Interface of hBcl-B - hBaxBH3 Heterodimer as Probed by Computational Methods
ABSTRACT Cancerous cells develop resistance to cell death by over expression of anti-apoptotic proteins, which are specific to interact with pro-apoptotic and BH3-only proteins of Bcl-2 family. Delineating crucial residues mediating the heterodimer complexes (anti-apoptotic proteins - pro-apoptotic/BH3-only proteins) is indispensable to develop specific anta
Braz. arch. biol. technol.. Publicado em: 28/07/2016
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6. Friedel-Crafts Alkylation of Toluene as a Parallel Reaction in Propylene Dimerization Catalyzed by Nickel β-Diimine Complex/EASC in Homogeneous Phase
A oligomerização do propeno foi realizada utilizando o complexo dibromo-bis(N,N'- difenilpentano-2,4-diimina)niquel(II) como precursor catalítico combinado ao sesquicloreto de etilalumínio (Al2Et3Cl3, EASC) como co-catalisador. A 10 ºC, usando o tolueno como solvente, altas frequências de rotação foram obtidas (até 57000 h–1) com alta seletividade
J. Braz. Chem. Soc.. Publicado em: 2014-12
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7. Exploración estocástica de las superficies de energía potencial de dímeros cis-trans y trans-trans del ácido fórmico
Potential energy surface (PES) of cis-trans and trans-trans formic acid dimers were sampled using a stochastic method, and the geometries, energies, and vibrational frequencies were computed at B3LYP/6-311++G(3df,2p) level of theory. The results show that molar free energy of dimerization deviated up to 108.4% when basis set superposition error (BSSE) and ze
Quím. Nova. Publicado em: 2014
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8. Estudos estruturais e funcionais da Hsp90 de Leishmania braziliensis e suas co-chaperonas p23 / Structural and functional studies of Leishmania braziliensis Hsp90 and its p23 co-chaperones
Molecular chaperones are proteins involved in proper folding of other proteins, and others important cellular functions, why they have been targeted for combating various diseases. The Hsp90 (82-96 kDa) are ubiquitous chaperones that interact with a wide range of client proteins. They are formed by three domains: N-terminal, central or middle (M), and C-term
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2012
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9. Death switch for gene therapy: application to erythropoietin transgene expression
The effectiveness of the caspase-9-based artificial "death switch" as a safety measure for gene therapy based on the erythropoietin (Epo) hormone was tested in vitro and in vivo using the chemical inducer of dimerization, AP20187. Plasmids encoding the dimeric murine Epo, the tetracycline-controlled transactivator and inducible caspase 9 (ptet-mEpoD, ptet-tT
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07
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10. Produção e caracterização de leptina e TcPTP1 recombinantes, proteínas ligadas ao metabolismo, sinalização celular e inflamação. / Production and characterization of recombinant leptin and TcPTP1, proteins linked to metabolism, cell sinalization and inflamation.
Leptin is predominantly secreted by adipocytes and plays an important role in the regulation of the energetic metabolism of mammals. Because of this, leptin is strongly involved in the regulation of obesity. After ligation, dimerization and activation of its specific receptor in the hypothalamus, leptin activates JAK kinases that phosphorylate STAT transcrip
Publicado em: 2010
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11. Atividade peroxidásica da enzima superóxido dismutase 1 humana: produção do radical carbonato, dimerização covalente da enzima e implicações para a esclerose lateral amiotrófica / Peroxidase activity of human superoxide dismutase 1: production of the carbonate radical, covalent dimerization of the enzyme, and implications to amyotrophic lateral sclerosis
A esclerose lateral amiotrófica (ELA) é uma doença neurodegenerativa que afeta os neurônios motores levando a atrofia muscular e morte por insuficiência respiratória. Esta patologia se manifesta de forma esporádica ou familiar, que são indistinguíveis clinicamente. Mutações na enzima antioxidante superóxido dismutase 1 (hSod1) respondem por aprox
Publicado em: 2010
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12. SPECTROSCOPIC CHARACTERIZATION OF HYPOCRELLIN B: LANTHANIDE COMPLEXES FOR USE IN PHOTODYNAMIC THERAPY / Caracterização espectroscópica de complexos hipocrelina B: lantanídeos para uso em terapia fotodinâmica
A study about the optical properties of the chromophore hypocrellin B (HB) and of its complexes with lanthanum (La3+), europium (Eu3+) and terbium (Tb3+) ions in ethanol solutions was realized. This pigment is a potential second generation photosensitizer due to its great properties, as high in vivo metabolism and mainly high singlet oxygen generation quantu
Publicado em: 2009