Coulombic end effects

II, we describe recent experimental and theoretical advances in understanding electrophoretic mobility of DNA in agarose gels [7,8] as well as the anomalous migration of intrinsically curved DNA sequences [9-19], and protein-DNA complexes in polyacrylamide gel [20-28,3,4], In the second part, Sec. Ill, we briefly review two topics involving the polyelectrolyte characteristics of DNA [1] Coulombic end effects and (2) the connection between Poisson-Boltzmann and counterion condensation approaches. 

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