The protean proton in water

Article Abstract:

Marx and colleagues have used powerful computer simulation methods to demonstrate a more complex and rich picture of the proton's quantum-mechanical character. They find that the hydrated proton has an inherently fluxional character, with defined Eigen and Zundel cations have comparable degrees of incidence. They also find that certain aspects of the model are not in agreement with certain traditional views.

Chemistry, Physical and theoretical, Physical chemistry

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The peripatetic proton

Article Abstract:

Laser excitation are applied to activate the departure of a proton from the light-sensitive acidic molecule pyranine. Researchers have made a picture in which an acid and a base would diffuse to within certain distance of each other, at which point the proton would transfer in some unknown fashion over an imprecisely specified number of water molecules.

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A class act

Article Abstract:

Membrane fusion and the situation in which it occurs is discussed. Protein rearrangements are also highlighted.

Physiological aspects, Membrane fusion, Cell interaction, Cell interactions

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