Probing the mechanical unzipping of DNA.
A study of the micromechanical unzipping of DNA in the framework of the Peyrard-Bishop-Dauxois model is presented. We introduce a Monte Carlo technique that allows accurate determination of the dependence of the unzipping forces on unzipping speed and temperature. Our findings agree quantitatively with experimental results for homogeneous DNA, and for lamda-phage DNA we reproduce the recently obtained experimental force-temperature phase diagram. Finally, we argue that there may be fundamental differences between in vivo and in vitro DNA unzipping.
Voulgarakis
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NK
Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Redondo
A
A
Bishop
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AR
Rasmussen
K Ø
KØ
D010582:Bacteriophage lambda / Q000737:chemistry; D020029:Base Pairing; D004247:DNA / Q000737:chemistry*; D004279:DNA, Viral / Q000737:chemistry*; D008956:Models, Chemical; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation
D004279:DNA, Viral; D004247:DNA