Physics – Condensed Matter
Scientific paper
2000-03-17
Physics
Condensed Matter
Scientific paper
10.1103/PhysRevLett.86.1031
The thermodynamics of a homopolymeric chain with both Van der Waals and highly-directional hydrogen bond interaction is studied. The effect of hydrogen bonds is to reduce dramatically the entropy of low-lying states and to give raise to long-range order and to conformations displaying secondary structures. For compact polymers a transition is found between helix-rich states and low-entropy sheet-dominated states. The consequences of this transition for protein folding and, in particular, for the problem of prions are discussed.
Borg Janet
Jensen Mogens H.
Sneppen Kim
Tiana Guido
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