In the presence of multivalent cations, high molecular weight DNA undergoes a dramatic
condensation to a compact, usually highly ordered toroidal structure. This review begins with …

Complex functioning of the genome in the cell nucleus is controlled at different levels:(a) the
DNA base sequence containing all relevant inherited information;(b) epigenetic pathways …

The elastic response of single plasmid and lambda phage DNA molecules was probed
using optical tweezers at concentrations of trivalent cations that provoked DNA …

Recently, it has become clear that single, long duplex DNAs exhibit a large discrete
transition between elongated coil and compacted globule states. To obtain further insight …

Compaction of single large ds DNA chains in aqueous solution in the presence of primary
alcohols, acetone, and ethylene glycol has been studied experimentally with the use of a …

The compaction and aggregation of DNA induced by cationic surfactants was studied by
dynamic light scattering (DLS). Furthermore, the effect on surfactant-compacted DNA of the …

The dissociation of DNA− cationic surfactant complexes with the addition of a negative
amphiphile was studied by fluorescence microscopy (FM). The unfolding of DNA molecules …

The simplest theory of the collapse transition of single polyelectrolyte chains in dilute
solutions is reconsidered. A novel feature of the new treatment is that the counterions can …

By observing isolated long DNA chains with fluorescence microscopy, the collapsing
transition of individual single DNAs induced by polyethylene glycol with pendant amino …

In the present study we measure the electrophoretic mobility of giant T4 DNA (166 kbp) by
electrophoretic light scattering for the elongated and folded compact states at different …