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naphthalene/carie dentaria
Il collegamento viene salvato negli appunti
Pagina 1 a partire dal 166 risultati
Kinetics and thermodynamics of the interaction of 1-anilino-naphthalene-8-sulfonate with proteins.
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Although 1-anilino-naphthalene-8-sulfonate (ANS) has been widely used in protein folding and binding studies, the detailed mechanism of this interaction is not fully understood. In this work the binding of ANS was analyzed at pre-equilibrium and equilibrium conditions using bovine serum albumin
Monitoring the Tanford transition in beta-lactoglobulin by 8-anilino-1-naphthalene sulfonate and mass spectrometry.
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The fluorescent dye 8-anilino-1-naphthalene sulfonate (ANS) is known to interact with proteins by conformation-specific hydrophobic interactions and rather nonspecific electrostatic interactions. To which category the complexes detectable by mass spectrometry (MS) belong is still the subject of
Jet-discharge cavity ring-down spectroscopy of ionized polycyclic aromatic hydrocarbons: progress in testing the PAH hypothesis for the diffuse interstellar band problem.
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Naphthalene cations (C10H+8) were produced in a slit jet coupled with an electronic discharge, and cavity ring down was used to obtain its absorption spectrum in the region 645-680 nm. Two of the strongest C10H+8 bands previously characterized by matrix isolation spectroscopy were found, both with a
Theoretical approach to the innovative mutation of naphthalene 1,2-dioxygenase: a molecular dynamics and docking study.
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Polycyclic aromatic hydrocarbons are a family of ubiquitous pollutants whose environmental behavior has been widely studied. Different bacterial species are able to decompose hydrocarbons by using them as a food source. One of the best-studied enzymes is naphthalene 1,2-dioxygenase (NDO). A
Molecular recognition of a model globular protein apomyoglobin by synthetic receptor cyclodextrin: effect of fluorescence modification of the protein and cavity size of the receptor in the interaction.
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Labelling of proteins with some extrinsic probe is unavoidable in molecular biology research. Particularly, spectroscopic studies in the optical region require fluorescence modification of native proteins by attaching polycyclic aromatic fluoroprobe with the proteins under investigation. Our present
Infrared cavity ringdown spectroscopy of jet-cooled polycyclic aromatic hydrocarbons.
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Infrared absorption spectra of the CH stretching region were observed for naphthalene, anthracene, phenanthrene, pyrene, and perylene using a heated, supersonic, slit-jet source and cavity ringdown spectroscopy. Band positions and intensities recorded with 0.2-cm-1 resolution were compared with
Deposition of naphthalene and tetradecane vapors in models of the human respiratory system.
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Jet-propulsion fuel (particularly JP-8) is currently being used worldwide, exposing especially Air Force personnel and people living near airfields to JP-8 vapors and aerosols during aircraft fueling, maintenance operations, and/or cold starts. JP-8 is a complex mixture containing >200, mostly
Effects of atmospheric exposure to naphthalene on xenobiotic-metabolising enzymes in the snail Helix aspersa.
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Polycyclic aromatic hydrocarbons are xenobiotics whose elevated toxicity for living organisms requires to efficiently monitor air pollution, either by evaluating their levels in the environment, or by assessing their biological impacts on sentinel organisms. We investigated the effects of
N,N'-Bis(pyridin-2-yl)benzene-1,4-diamine-naphthalene (2/1).
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The asymmetric unit of the title compound, C(10)H(8)·2C(16)H(14)N(4), consists of one mol-ecule of N,N'-bis-(pyridin-2-yl)benzene-1,4-diamine (PDAB) and one half of the centrosymmetric naphthalene mol-ecule. The PDAB mol-ecule adopts a non-planar conformation with an E configuration at the two
Cavity residue leucine 95 and channel residues glutamine 204, aspartic acid 211, and phenylalanine 269 of toluene o-xylene monooxygenase influence catalysis.
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Structural analysis of toluene-o-xylene monooxygenase (ToMO) hydroxylase revealed the presence of three hydrophobic cavities, a channel, and a pore leading from the protein surface to the active site. Here, saturation mutagenesis was used to investigate the catalytic roles of alpha-subunit (TouA)
Encapsulated guest-host dynamics: guest rotational barriers and tumbling as a probe of host interior cavity space.
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The supramolecular host assembly [Ga(4)L(6)](12-) (1; L = 1,5-bis[2,3-dihydroxybenzamido]naphthalene) encapsulates cationic guest molecules within its hydrophobic cavity and catalyzes a variety of chemical transformations within its confined interior space. Despite the well-defined structure, the
Ultrathin gold nanoribbons synthesized within the interior cavity of a self-assembled peptide nanoarchitecture.
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There is increasing interest in gold nanocrystals due to their unique physical, chemical, and biocompatible properties. In order to develop a template-assisted method for the fabrication of gold nanocrystals, we demonstrate here the de novo design and synthesis of a β-sheet-forming nonapeptide
Water molecules in the binding cavity of intestinal fatty acid binding protein: dynamic characterization by water 17O and 2H magnetic relaxation dispersion.
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The hydration of intestinal fatty acid binding protein (IFABP) in apo-form and complexed with palmitate, oleate, and 1-anilino-8-naphthalene sulfonate (ANS) has been studied by water 17O and 2H magnetic relaxation dispersion (MRD) measurements. These ligands bind in a large internal cavity,
Roles of aromatic side chains and template effects of the hydrophobic cavity of a self-assembled peptide nanoarchitecture for anisotropic growth of gold nanocrystals.
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Gold nanocrystals are promising as catalysts and for use in sensing/imaging systems, photonic/plasmonic devices, electronics, drug delivery systems, and for photothermal therapy due to their unique physical, chemical, and biocompatible properties. The use of various organic templates allows control
Effects of QA 208-199 and its metabolite 209-668 on embryonic development in vitro after microinjection into the exocoelomic space or into the amniotic cavity of cultured rat conceptuses.
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The objective of this study was to determine the direct embryotoxic effects in vitro of N-hydroxy-N-methyl-7-propoxy-2-naphthalene-ethanamine (QA 208-199, QAB) and of one of its metabolites, 7-propoxy-naphthalene-2-ylacetic acid (209-668, QAA), after circumventing the bioconverting conceptual
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