Effect of external stress on the thermal melting of DNA

Abstract

We discuss the effects of external stress on the thermal denaturation of homogeneous DNA. Pulling double-stranded DNA at each end exerts a profound effect on the thermal denaturation, or melting, of a long segment of this molecule. We discuss the effects on this transition of a stretching force applied to opposite ends of one of the DNA strands, including full consideration of the consequences of excluded volume, the analysis of which is greatly simplified in this case. We also discuss the interplay of thermal denaturation and force-generated separation when the tension is generated by a force at the end of the duplexed strands and an equal and opposite force is applied to the other end of the second strand.

References in corpus (2)

• Denaturation transition of stretched DNA
• Distribution of pseudo-critical temperatures and lack of self-averaging in disordered Poland-Scheraga models with different loop exponents

Cited by in corpus (6)

• Path Integral Method for DNA Denaturation
• Denaturation Patterns in Heterogeneous DNA
• Melting of persistent double-stranded polymers
• Mesoscopic models for DNA stretching under force: new results and comparison to experiments
• Can a double stranded DNA be unzipped by pulling a single strand?: Phases of adsorbed DNA
• Cross-linked pair of polymer chains under strong tension