Mitochondrial Alternative Pathways
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Involvement of brassinosteroids and ethylene in the control of mitochondrial electron transport chain in postharvest papaya fruit
The plant hormones brassinosteroids (BR) and ethylene (ET) act together to regulate plant metabolism. We used BR and 1-methylcyclopropene (1-MCP, an ET action inhibitor) to elucidate the interactions between both hormones for the regulation of mitochondrial respiratory pathways in papaya fruit. The exogenous application of the 24-epibrassinolide (epiBR) enha
Theor. Exp. Plant Physiol.. Publicado em: 08/11/2013
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2. Bioenergetic characterization of Paracoccidioides brasiliensis yeast form: biochemical and molecular studies of mitochondrial alternative pathways. / Caracterização bioenergética da forma leveduriforme de P. brasiliensis: estudos bioquímicos e moleculares de vias mitocondriais alternativas
O fungo dimórfico Paracoccidioides brasiliensis, é o agente etiológico da paracoccidioidomicose, uma das micoses sistêmicas humanas mais prevalentes na América Latina. Componentes da cadeia respiratória mitocondrial são potenciais alvos quimioterapêuticos. Nesse sentido, em nosso trabalho demonstramos diferenças entre a cadeia respiratória do fungo
Publicado em: 2007
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3. Respiration, oxidative phosphorylation, and uncoupling protein in Candida albicans
The respiration, membrane potential (Dy), and oxidative phosphorylation of mitochondria in situ were determined in spheroplasts obtained from Candida albicans control strain ATCC 90028 by lyticase treatment. Mitochondria in situ were able to phosphorylate externally added ADP (200 µM) in the presence of 0.05% BSA. Mitochondria in si
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-10
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4. Transgenic Plant Cells Lacking Mitochondrial Alternative Oxidase Have Increased Susceptibility to Mitochondria-Dependent and -Independent Pathways of Programmed Cell Death1
The plant mitochondrial electron transport chain is branched such that electrons at ubiquinol can be diverted to oxygen via the alternative oxidase (AOX). This pathway does not contribute to ATP synthesis but can dampen the mitochondrial generation of reactive oxygen species. Here, we establish that transgenic tobacco (Nicotiana tabacum L. cv Petit Havana SR
American Society of Plant Physiologists.
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5. Electron Partitioning between the Cytochrome and Alternative Pathways in Plant Mitochondria.
The contribution of the cyanide-resistant, alternative pathway to plant mitochondrial electron transport has been studied using a modified aqueous phase on-line mass spectrometry-gas chromatography system. This technique permits direct measurement of the partitioning of electrons between the cytochrome and alternative pathways in the absence of added inhibit
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6. Metabolic Adaptations of Plant Respiration to Nutritional Phosphate Deprivation.
Plants respond adaptively to orthophosphate (Pi) deprivation through the induction of alternative pathways of glycolysis and mitochondrial electron transport. These respiratory bypasses allow respiration to proceed in Pi-deficient plant cells because they negate the necessity for adenylates and Pi, both pools of which are severely depressed following nutriti
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7. Mutually exclusive synthetic pathways for sea urchin mitochondrial rRNA and mRNA.
The structure and abundance of mitochondrial transcripts in sea urchin embryos were investigated by a combination of RNA blot-hybridization, S1 mapping, and primer extension assays. Between the egg and blastula stages, the relative abundance of mitochondrial rRNAs declined slightly, while that of mitochondrial mRNAs increased up to 10-fold. Fine mapping of t
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8. Cyanide-Resistant Respiration in Light- and Dark-Grown Soybean Cotyledons 1
Measurements of respiration were made on intact tissue and mitochondria isolated from soybean (Glycine max [L.] Merr. cv `Corsoy') cotyledons from seedlings of different ages grown in light and darkness. Effects of cyanide (KCN) and salicylhydroxamic acid (SHAM) on O2 uptake rates were determined. O2 uptake was faster in light-grown tissue and was inhibited
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9. Multiple Signaling Pathways of the Insulin-Like Growth Factor 1 Receptor in Protection from Apoptosis
The type 1 insulin-like growth factor receptor (IGF-1R), activated by its ligands, protects several cell types from a variety of apoptotic injuries. The main signaling pathway for IGF-1R-mediated protection from apoptosis has been previously elucidated and rests on the activation of phosphatidylinositol 3-kinase, Akt/protein kinase B, and the phosphorylation
American Society for Microbiology.
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10. Alternative Oxidase Activity in Tobacco Leaf Mitochondria (Dependence on Tricarboxylic Acid Cycle-Mediated Redox Regulation and Pyruvate Activation).
Transgenic Nicotiana tabacum (cv Petit Havana SR1) containing high levels of mitochondrial alternative oxidase (AOX) protein due to the introduction of a sense transgene(s) of Aox1, the nuclear gene encoding AOX, were used to investigate mechanisms regulating AOX activity. After purification of leaf mitochondria, a large proportion of the AOX protein was pre
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11. Mitochondrial Portraits of Human Populations Using Median Networks
Analysis of variation in the hypervariable region of mitochondrial DNA (mtDNA) has emerged as an important tool for studying human evolution and migration. However, attempts to reconstruct optimal intraspecific mtDNA phylogenies frequently fail because parallel mutation events partly obscure the true evolutionary pathways. This makes it inadvisable to presen
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12. High Mitochondrial Activity but Incomplete Engagement of the Cyanide-Resistant Alternative Pathway in Guard Cell Protoplasts of Pea.
The respiratory properties of guard cell protoplasts (GCP) were examined in comparison with those of mesophyll protoplasts (MCP) from the same leaves of pea (Pisum sativum L. cv Arkel). The rates of respiratory O2 uptake by GCP were extremely high (280 [mu]mol mg-1 Chl h-1) and were several times greater than those of MCP. On the other hand, the rates of pho