Now showing items 1-10 of 72
Electron migration in DNA matrix: an electron transfer reaction
(Eclética Química, 1998-01-01) [Artigo]
Este artigo apresenta uma área de pesquisa atual, ativa e interessante. Descreve a investigação da química de transferência de elétrons (TE) de um modo geral e resultados de TE em DNA em particular. Dois intercalantes de ...
Electron transfer by singlet excited state of porphyn and electron acceptor affinity in rigid medium: photoacoustic phase angle analysis
(Eclética Química, 1997-01-01) [Artigo]
A espectroscopia fotoacústica obtém informações sobre amplitude e fase, da resposta de um sistema submetido a excitação por luz. Este artigo apresenta estudos do ângulo de fase no processo de transfereência de elétrons ...
Mixtures of neutral polymers and non-ionic surfactants studied by light scattering and fluorescence methods.
(Abstracts of Papers of the American Chemical Society, 1997-04-13) [Resumo]
Polyacids self-dissociation model
(Journal of Physical Chemistry B, 1997-11-20) [Artigo]
This work deals with a model to interpret pH measurements of solutions of weak rodlike polyacids, in the absence of added salts or titrating base. The polyacid is modeled as a series of point charges discretely distributod ...
H-bond simulation in DNA using a harmonic oscillator isospectral potential
(Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 1997-12-01) [Artigo]
A harmonic oscillator isospectral potential obtained by supersymmetric algebra applied to quantum mechanics is suggested to simulate DNA H bonds. Thermic denaturation is studied with this potential.
A SequenceSpace analysis of Lys49 phospholipases A2: Clues towards identification of residues involved in a novel mechanism of membrane damage and in myotoxicity
(Protein Engineering, 1998-04-01) [Artigo]
'SequenceSpace' analysis is a novel approach which has been used to identify unique amino acids within a subfamily of phospholipases A2 (PLA2) in which the highly conserved active site residue Asp49 is substituted by Lys ...
Size, electrophoretic mobility, and ion dissociation of vesicles prepared with synthetic amphiphiles
(Journal of Physical Chemistry, 1990-12-01) [Artigo]
Vesicles prepared with synthetic amphiphiles (dioctadecyldimethylammonium bromide and chloride, dihexadecyl phosphate and its sodium salt) were obtained by sonication, ethanol injections, and chloroform injections. The ...
Structure/function relationships of K49-phospholipase A2 (PLA2) homologues - Fluorescence spectroscopy studies using bothropstoxin I from Bothrops jararacussu as a model system
(Journal of Venomous Animals and Toxins, 1997-01-01) [Trabalho apresentado em evento]
Crystallization and preliminary diffraction data of a platelet-aggregation inhibitor from the venom of Agkistrodon piscivorus piscivorus (North American water moccasin)
(Acta Crystallographica Section D: Biological Crystallography, 1999-08-01) [Artigo]
Applaggin (Agkistrodon piscivorus piscivorus platelet-aggregation inhibitor) is a potent inhibitor of blood platelet aggregation derived from the venom of the North American water moccasin, the protein consists of 71 amino ...
Amino acid sequence of a myotoxic Lys49-phospholipase A(2) homologue from the venom of Cerrophidion (Bothrops) godmani
(Biochimica Et Biophysica Acta-protein Structure and Molecular Enzymology, 1998-05-19) [Artigo]
The complete amino acid sequence of myotoxin II (godMT-II), a myotoxic phospholipase A( 2 )(PLA(2)) homologue from the venom of the Central American crotaline snake Cerrophidion (Bothrops) godmani, was determined by direct ...