NR ABMX
AU Borg,J.; Jensen,M.H.; Sneppen,K.; Tiana,G.
TI Hydrogen bonds in polymer folding
QU Physical Review Letters 2001 Feb 5; 86(6): 1031-3
PT journal article
AB We studied the thermodynamics of a homopolymeric chain with both van der Waals and directed hydrogen bond interaction. The effect of hydrogen bonds is to reduce dramatically the entropy of low-lying states and to give rise 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.
MH *Hydrogen Bonding; Models, Molecular; *Molecular Conformation; Polymers/*chemistry; Proteins/chemistry
AD Niels Bohr Institute and Nordita, Blegdamsvej 17, DK-2100, Denmark.
SP englisch
PO USA