Can re-entrance be observed in force-induced transitions?

Kumar, Sanjay (2009) Can re-entrance be observed in force-induced transitions? EPL (Europhysics Letters), 85 (3). Article ID 38003. ISSN 0295-5075

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Official URL: http://iopscience.iop.org/article/10.1209/0295-507...

Related URL: http://dx.doi.org/10.1209/0295-5075/85/38003

Abstract

A large conformational change in the reaction co-ordinate and the role of the solvent in the formation of base pairing are combined to settle a long-standing issue, i.e. prediction of re-entrance in the force-induced transition of DNA. A direct way to observe the re-entrance, i.e. a strand that goes to the closed state from the open state and again to the open state with increasing temperature, appears difficult to be achieved in the laboratory. An experimental protocol (in direct way) in the constant force ensemble is being proposed for the first time that will enable the observation of the re-entrance behavior in the force-temperature plane. Our exact results for a small oligonucleotide that forms a hairpin structure provide the evidence that re-entrance can be observed.

Item Type:Article
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ID Code:102659
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