Browsing by Title Artículos de revistas
Now showing items 2554-2573 of 4967
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(2012)Neurogenesis continues in the adult brain and in the adult olfactory epithelium. The cytokine, leukaemia inhibitory factor and nitric oxide are both known to stimulate neuronal progenitor cell proliferation in the olfactory ...
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(Amer Soc Biochemistry Molecular Biology, 2015)N-6-Threonylcarbamoyl-adenosine (t(6)A) is a universal modification occurring at position 37 in nearly all tRNAs that decode A-starting codons, including the eukaryotic initiator tRNA (tRNA(i)(Met)). Yeast lacking central ...
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Levels of Lycopene b-Cyclase 1 Modulate Carotenoid Gene Expression and Accumulation in Daucus carota (PLoS ONE, 2013)Plant carotenoids are synthesized and accumulated in plastids through a highly regulated pathway. Lycopene b-cyclase (LCYB) is a key enzyme involved directly in the synthesis of a-carotene and b-carotene through the ...
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(Amer Chemical Soc, 2015)We herein report on the effect that water molecules, present as impurities, in the vicinity of an ionic liquid model structure, may induce on the Lewis acidity/basicity patterns normally observed in these materials. Depending ...
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(American Chemical Society, 2013)Two complementary models of Lewis molecular acidity are introduced and tested in a wide series of 45 room temperature ionic liquids (RTIL). They are defined in the context of the conceptual density functional theory. ...
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(Sociedad Chilena de Quimica, 2013)Lichens are symbiotic relationship between fungi and algae or cyanobacteria. Secondary metabolites from lichens are known as lichen substances. We investigated depsidone and depside from lichens 1-6 in the context of their ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2010-07-11)Industrial biomining processes to extract copper, gold and other metals involve the use of extremophiles such as the acidophilic Acidithiobacillus ferrooxidans (Bacteria), and the thermoacidophilic Sulfolobus metallicus ...
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(2010)We explored the response to habitat desiccation in tadpoles of the warty toad Rhinella spinulosa in a manipulative field experiment. We built an artificial pond system with two desiccation levels (high and low) and ...
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(SPRINGER, 2006-11)We consider the 2D Landau Hamiltonian H perturbed by a random alloy-type potential, and investigate the Lifshitz tails, i.e. the asymptotic behavior of the corresponding integrated density of states (IDS) near the edges ...
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(Kluwer Academic Publishers, 1986)The synthesis, characterization and electrochemical behaviour of a new series of copper(II) complexes derivated from substituted anilines and bromosalicylaldehydes have been studied. The complexes show a square-plane ...
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(2002)Binding of MgATPto the allosteric site of phosphofructokinase-2 promotes a dimer to tetramer conversion. In the presence of Fru-6-Pthe enzyme remains as a dimer. Limited proteolysis in the presence of MgATPcompletely ...
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(1998)The binding of ligands to phosphofructokinase 2 (Pfk-2) from Escherichia coli induces changes in the fluorescence emission properties of its single tryptophan residue, Trp88, suggesting that upon binding the protein ...
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(2016)Axonal growth cone collapse following spinal cord injury (SCI) is promoted by semaphorin3A (Sema3A) signaling via PlexinA4 surface receptor. This interaction triggers intracellular signaling events leading to increased ...
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(Elsevier, 2015)We define a map F with domain a certain subset of the set of light leaves (certain morphisms between Soergel bimodules introduced by the author in an earlier paper) and range the set of prime numbers. Using results of ...
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(2012)Carrot is an important nutritional crop due to the high levels of pro-vitamin A carotenoids (β-carotene and, to a lower extent, α-carotene) that accumulate in its storage root during secondary growth. In this work we show ...
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Light-dependent channels from excised patches of Limulus ventral photoreceptors are opened by cGMP (National Academy of Sciences, 1991)The identity of the second menenger that directly activates the light-dependent conductance in invertebrate photoreceptors remains unclear; the available evidence provides some support for cGMP and Ca2+. To resolve this ...
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(Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, 2008-12-22)Carotenoids are colored terpenes synthesized in plants, algae and some yeasts and bacteria. In plants and algae, these lipophilic molecules exert functional roles in hormone synthesis, photosynthesis, photomorphogenesis ...
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(Elsevier, 2019)Drosophila phototransduction occurs in light-sensitive microvilli arranged in a longitudinal structure of the photoreceptor, termed the rhabdomere. Rhodopsin (Rh), isomerized by light, couples to G-protein, which activates ...
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(Springer, 2021)It is showed that complex scalar fields with a self-interaction potential may propagate along null geodesics on isotropic flat Friedmann-Lemaitre-Robertson-Walker universes with different time-dependent scale factors. This ...