Ion atmosphere of three-way junction nucleic acid

Article Abstract:

The ion atmosphere of three-armed symmetric Y-shaped and asymmetric y-shaped A-RNA junctions in aqueous solution containing multivalent ions is described within the framework of a polyelectrolyte model. The fraction of screening counterions per polyion charge that shield the residual unneutralized charges from interacting with one another and the condensed counterions per polyion as a function of sodium and magnesium ion concentrations are determined.

Primary nonferrous metals, not elsewhere classified, Magnesium, Magnesium (Metal)

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Ion atmosphere around nucleic acid

Article Abstract:

The poyion-ion preferential interaction coefficient gamma describes the exclusion of coions and accumulations of counterions in the vicinity of a polyion in an aqueous solution. The way in which the bounds for the infinite polyion can be exploited to place bound for polyions of length more than a constant on the order of the reverse Debye screening length is discussed.

Analysis, Monte Carlo method, Monte Carlo methods, Chemical properties

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Dynamics of bent molecules in gels

Article Abstract:

A quantitative predictive model of the electrophoretic mobility of a bent molecule of cylindrical symmetry relative to a straight one in a gel is discussed. The predictions are compared with available experimental data as well as semiempirical relation between the relative electrophoretic mobility and the bend angle by Thompson and Landy.

Electrophoresis, Molecular dynamics

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