Abstract

Recently, the stretched intermediate model was proposed for the B–Z deoxyribonucleic acid (DNA) transition based on simulation results carried out using the Stochastic Difference Equation (SDE) that showed unwinding and elongation of the oligomer during the transition. This model has proven to be successful in resolving the steric dilemma in short oligomers. However, extending the simulation method to larger DNA strands may prove to be computationally challenging. Such difficulty has led us to adopt a mean field approach using phenomenological interaction potentials to simulate the transition. Like the atomistic approach, the SDE simulations based on the mean field approach, also suggest the presence of a stretched intermediate during the transition.

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