Zif
Mostrando 1-12 de 61 artigos, teses e dissertações.
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1. Harmonious interaction of incorporating CNTs and zeolitic imidazole frameworks into polysulfone to prepare high performance MMMs for CO 2 separation from humidified post combustion gases
Abstract Multi-walled carbon nanotubes (CNTs) and zeolitic imidazole frameworks (ZIF-301) were synergistically incorporated into glassy polysulfone (PSF) to prepare mixed-matrix membranes (MMMs) to separate CO2 from post combustion flue gas. The flexible MMMs rendering consistent distribution and improved adhesion of nanofillers with the polymer matrix were
Braz. J. Chem. Eng.. Publicado em: 2018-01
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2. Ultem®/ZIF-8 Mixed Matrix Membranes for Gas Separation: Transport and Physical Properties
Mixed matrix membranes are promising options for improving gas separation processes. Zeolitic imidazolate frameworks (ZIFs) have a porous structure similar to conventional zeolites, being capable in principle of separating gases based on their differences in kinetic diameter while offering the advantage of having a partial organic character. This partial org
Mat. Res.. Publicado em: 19/02/2016
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3. Expressão de zif268 no cérebro do lagarto Tropidurus Hispidus após exploração de um ambiente enriquecido.
Neste trabalho, foram investigadas alterações comportamentais associadas ao aumento da expressão da proteína Zif268 em áreas telencefálicas do lagarto tropical Tropidurus hispidus correspondentes ao Hipocampo (HC) de mamíferos. Foram utilizados 13 animais machos do lagarto T. hispidus, coletados no campus da Escola Agrotécnica Federal do RN, sob a li
Publicado em: 2010
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4. Análise funcional dos genes OsZIFL4 e OsZIFL9 em plantas de arroz (Oryza sativa L.)
Ferro e zinco são micronutrientes essenciais para o desenvolvimento de todas as plantas. Porém, quando em excesso, ambos se tornam tóxicos, levando à redução da biomassa, clorose, estresse oxidativo e inibição do crescimento das raízes. Portanto, as plantas desenvolveram mecanismos para lidar tanto com a deficiência quanto com o excesso desses micr
Publicado em: 2010
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5. Expressão de zif-268 durante a aquisição, evocação e extinção de uma memória aversiva
In the behavioral paradigm of discriminative avoidance task, both short and long-term memories have been extensively investigated with behavioral and pharmacological approaches. The aim of the present study was to evaluate, using the abovementioned model, the hippocampal expression of zif-268 - a calcium-dependent immediate early gene involved with synaptic
Publicado em: 2008
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6. Analise da expressão do produto do proto-oncogene zif/268 no hipocampo de pombos apos treino em condicionamento classico aversivo
O presente estudo pretendeu analisar os mecanismos neurais envolvidos na aquisição de condicionamento clássico aversivo, em pombos, através do estudo da expressão do produto do proto-oncogene zif/268, no hipocampo, após a sessão de treino. Os animais foram submetidos a três associações som (1O00-Hz, 83 dE, ls) choque (10 mA, ls), durante os 20 minu
Publicado em: 2002
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7. The Zif268 cellular transcription factor activates expression of the Epstein-Barr virus immediate-early BRLF1 promoter.
The Epstein-Barr virus immediate-early protein BZLF1 mediates the switch from latent to lytic infection. BZLF1 transcription can be derived from either the BZLF1 promoter or the BRLF1 promoter (Rp). Productive viral infection of EBV-infected B cells can be induced by 12-O-tetradecanoylphorbol-13-acetate (TPA) treatment, as well as cross-linking of surface im
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8. Retinoic acid increases zif268 early gene expression in rat preosteoblastic cells.
In this study we demonstrate that retinoic acid (RA) increases the expression of transcription factor zif268 mRNA in primary cultures of fetal rat calvarial cells and in simian virus 40-immortalized clonal rat calvarial preosteoblastic cells (RCT-1), which differentiate in response to RA, but not in the more differentiated RCT-3 and ROS 17/2.8 cells. The inc
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9. DNA binding site of the growth factor-inducible protein Zif268.
Zif268, a zinc finger protein whose mRNA is rapidly activated in cells exposed to growth factors or other signaling agents, is thought to play a role in regulating the genetic program induced by extracellular ligands. We report that Zif268 has one of the characteristics of a transcriptional regulator, namely, sequence-specific binding to DNA. Zif268 synthesi
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10. Functional serum response elements upstream of the growth factor-inducible gene zif268.
The zif268 gene, which encodes a protein with three typical zinc finger sequences, is induced in mouse 3T3 cells by serum, phorbol 12-myristate 13-acetate platelet-derived growth factor, and fibroblast growth factor. The induction is coordinate with that of c-fos. The 5'-flanking region of zif268 contains sequences that resemble known regulatory elements, in
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11. Functional significance of an overlapping consensus binding motif for Sp1 and Zif268 in the murine adenosine deaminase gene promoter.
The murine adenosine deaminase (ADA) gene has a (G + C)-rich promoter that can support diverse tissue-specific gene expression. By using deletion and mutation analyses, we have identified a cis-acting "repressor" element located immediately upstream of the proximal Sp1 binding site in the ADA gene promoter. This repressor element was localized to a binding s
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12. Constitutive expression of zif268 in neocortex is regulated by synaptic activity.
Transcription factors are rapidly and transiently induced in brain by excitatory stimuli and may be important in coordinating changes in gene expression underlying neuronal plasticity. In contrast to their transient induction after stimulation, certain transcription factors display stable, relatively high basal levels of expression in brain. Here we demonstr