Cell Compartmentation
Mostrando 1-12 de 61 artigos, teses e dissertações.
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1. Hydrogen sulfide: a new endogenous player in an old mechanism of plant tolerance to high salinity
ABSTRACT High salinity affects plants due to stimulation of osmotic stress. Cell signaling triggered by nitric oxide (NO) and hydrogen sulfide (H2S) activates a cascade of biochemical events that culminate in plant tolerance to abiotic and biotic stresses. For instance, the NO/H2S-stimulated biochemical events that occur in plants during response to high sal
Acta Bot. Bras.. Publicado em: 19/10/2017
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2. "Predição do risco de metástase do carcinoma bem diferenciado da glândula tireóide pela quantificação digital da imunoexpressão da galectina-3 nos compartimentos do tireócito maligno" / Prediction of metastasis risk in well-differentiated thyroid carcinoma based on digital quantification of galectin-3 immunoexpression in subcellular compartments of the malignant thyrocyte
INTRODUCTON: Papillary and follicular carcinomas are primary malignant neoplasias of the thyroid gland and are classified as well-differentiated carcinoma. In these cases, determination of individual risk of metastasis allows offering an adequate treatment. Nowadays therapy is chosen based on classification according to prognostic factors and biomarkers can
Publicado em: 2006
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3. Intracellular Compartmentation of Ions in Salt Adapted Tobacco Cells 1
Na+ and Cl− are the principal solutes utilized for osmotic adjustment in cells of Nicotiana tabacum L. var Wisconsin 38 (tobacco) adapted to NaCl, accumulating to levels of 472 and 386 millimolar, respectively, in cells adapted to 428 millimolar NaCl. X-ray microanalysis of unetched frozen-hydrated cells adapted to salt indicated that Na+ and Cl− were co
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4. Compartmentation of uracil in Euglena gracilis.
Compartmentation of uracil in the flagellate Euglena gracilis was studied by tracer-kinetic experiments. Lag times in the equilibration of exogenously given and intracellularly present uracil before linear labeling of catabolic and anabolic products was determined to estimate the size of its metabolically active pool. This pool operates in the incorporation
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5. Subcellular compartmentation in control of converging pathways for proline and arginine metabolism in Saccharomyces cerevisiae.
Enzymes of proline biosynthesis and proline degradation which act on the same compound, delta 1-pyrroline-5-carboxylate, are physically separated in yeast cells. The enzyme responsible for the final step in proline biosynthesis, pyrroline-5-carboxylate reductase, converts pyrroline-5-carboxylate to proline and is located in the cytoplasm. The last enzyme in
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6. Transport, Compartmentation, and Metabolism of Homoserine in Higher Plant Cells : Carbon-13- and Phosphorus-31-Nuclear Magnetic Resonance Studies
The transport, compartmentation, and metabolism of homoserine was characterized in two strains of meristematic higher plant cells, the dicotyledonous sycamore (Acer pseudoplatanus) and the monocotyledonous weed Echinochloa colonum. Homoserine is an intermediate in the synthesis of the aspartate-derived amino acids methionine, threonine (Thr), and isole
American Society of Plant Physiologists.
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7. Visualization of Protein Compartmentation within the Plasma Membrane of Living Yeast Cells
Different distribution patterns of the arginine/H+ symporter Can1p, the H+ plasma membrane ATPase Pma1p, and the hexose transport facilitator Hxt1p within the plasma membrane of living Saccharomyces cerevisiae cells were visualized using fluorescence protein tagging of these proteins. Although Hxt1p-GFP was evenly distributed through the whole cell surface,
The American Society for Cell Biology.
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8. cAMP compartmentation is responsible for a local activation of cardiac Ca2+ channels by beta-adrenergic agonists.
The role of cAMP subcellular compartmentation in the progress of beta-adrenergic stimulation of cardiac L-type calcium current (ICa) was investigated by using a method based on the use of whole-cell patch-clamp recording and a double capillary for extracellular microperfusion. Frog ventricular cells were sealed at both ends to two patch-clamp pipettes and po
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9. Rapid turnover of microtubule-associated protein MAP2 in the axon revealed by microinjection of biotinylated MAP2 into cultured neurons.
We studied the mechanism of compartmentation of microtubule-associated protein 2 (MAP2) in the dendrites and cell bodies by using microinjection of biotin-labeled MAP2 into mature spinal cord neurons in culture. MAP2 molecules microinjected into the nerve cell body were distributed not only throughout the cytoplasm of the cell body and dendrites, but also in
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10. Metabolite compartmentation in Saccharomyces cerevisiae.
Uninduced cultures of Saccharomyces cerevisiae exhibit high basal levels of allantoinase, allantoicase, and ureidoglycolate hydrolase, the enzymes responsible for degrading allantoin to urea. As a result, these activities increase only 4- to 8-fold upon induction, whereas the urea-degrading enzymes, urea carboxylase and allophanate hydrolase, have very low b
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11. Cellular Compartmentation of Zinc in Leaves of the Hyperaccumulator Thlaspi caerulescens1
Cellular compartmentation of Zn in the leaves of the hyperaccumulator Thlaspi caerulescens was investigated using energy-dispersive x-ray microanalysis and single-cell sap extraction. Energy-dispersive x-ray microanalysis of frozen, hydrated leaf tissues showed greatly enhanced Zn accumulation in the epidermis compared with the mesophyll cells. The rela
American Society of Plant Physiologists.
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12. Regulation of intracellular calcium compartmentation: studies with isolated hepatocytes and t-butyl hydroperoxide.
In suspensions of isolated hepatocytes, two intracellular Ca2+ pools were distinguished in the presence of the metallochrome indicator arsenazo III, first by treatment with the uncoupler carbonyl cyanide p-trifluoromethoxyphenylhydrazone (FCCP) and then with the Ca2+ ionophore A23187. The available evidence indicates that the two pools are of mitochondrial a