Water and Ions in Biomolecular Systems

Contenu

Water, Ions and Nucleic Acids.- Structural water of nucleic acids.- Structure of xenopus laevis 5s rRNA as determined by solution data and computer graphic modeling.- Ionic effects on DNA electrostatic and elastic stability.- Copper ions at trace level and DNA functioning: studies performed with 64Cu and 67Cu.- Z-DNA transconformation: a quantum molecular approach.- Proteins as counterions of DNA: a new model of nucleoprotamine structure.- Effect of hydration and metal ions on DNA conformations studied by vibrational spectroscopy.- Showing-up the Na+ entropy of fluctuations during the DNA thermal transconformation by 23Na NMR: influence of radioprotector cysteamine.- Water, Ions and Proteins.- The central helix of calmodulin and homologs - Effects of solvent exposure on stability.- Control of protein kinase C function: an inhibitor study.- On the structure and elasticity of elastin.- Structure and dynamics of a -19kD phosphoprotein, amelogenin, from bovine tooth enamel.- Studies of protein hydration by direct NMR observation of individual protein-bound water molecules.- A role for molecular motion as a mechanism for the NMR relaxation of water protons in biological systems.- Effect of collagen crosslinking on collagen-water interaction.- Proton conductivity in hydrated proteins - Evidence for percolation.- A non-traditional role for water during electron transfer by cytochrome C oxidase.- Water, Ions and Membranes.- Ion translocation by the NA,K-pump : correlation between electrogenic events and conformational transitions.- Theoretical and experimental aspects of the specific association of monovalent ions with lipid bilayer membranes.- The role of isothermal enthalpy production in coupled solute translocation across the membrane.- Intracellular spermine modifies neuronal electrical activity.- Spectroscopic studies on the structure and aggregation of calcium ionophore, A23187.- Fura-2 imaging of intracellular free calcium dynamics in excitable cells.- Chemically driven phase separation in black lipid membranes.- A study of cadmium and calcium transport into a marine unicellular alga.- Involvement of D2O for H2O substitution in the behaviour of some excitable membranes.- Miscellaneous.- Femtosecond dynamics of single electron transfer in aqueous media and mimetic models of bioaggregates.- Bioelectrochemical properties of glutathione - A noise spectrography investigation.- Taking into account the cell water properties for the cytochemical detection of cations: embedding into melamin after pyroantimonate fixation.