Total curvature and total torsion of knotted polymers

Détails

ID Serval
serval:BIB_7B723CC35187
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Total curvature and total torsion of knotted polymers
Périodique
Macromolecules
Auteur(s)
Plunkett P., Piatek M., Dobay A., Kern J. C., Millett K. C., Stasiak A., Rawdon E. J.
ISSN
0024-9297
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
40
Numéro
10
Pages
3860-3867
Langue
anglais
Résumé
Previous work on radius of gyration and average crossing number has demonstrated that polymers with fixed topology show a different scaling behavior with respect to these characteristics than polymers with unrestricted topology. Using numerical simulations, we show here that the difference in the scaling behavior between polymers with restricted and unrestricted topology also applies to the total curvature and total torsion. For each knot type, the equilibrium length with respect to a given spatial characteristic is the number of edges at which the value of the characteristic is the same as the average for all polygons. This number appears to be correlated to physical properties of macromolecules, for example gel mobility as measured by the separation between distinct knot types. We also find that, on average, closed polymers require slightly more total curvature and slightly less total torsion than open polymers with the corresponding number of monomers.
Mots-clé
, SCALING BEHAVIOR, RANDOM POLYGONS, DNA
Web of science
Création de la notice
09/11/2009 12:39
Dernière modification de la notice
03/03/2018 18:35
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