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Conformational properties of complex polymers: Rosette versus star-like structures

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Details

Original languageEnglish
Article number135001
JournalJournal of Physics A: Mathematical and Theoretical
Volume48
Issue number13
DOIs
Publication statusPublished - 7 Apr 2015
Publication typeA1 Journal article-refereed

Abstract

Multiple loop formation in polymer macromolecules is an important feature of the chromatin organization and DNA compactification in the nuclei. We analyse the size and shape characteristics of complex polymer structures, containing in general f<inf>1</inf> loops (petals) and f<inf>2</inf> linear chains (branches). Within the frames of continuous model of Gaussian macromolecule, we apply the path integration method and obtain the estimates for gyration radius R<inf>g</inf> and asphericity  of typical conformation as functions of parameters f<inf>1</inf>, f<inf>2</inf>. In particular, our results qualitatively reveal the extent of anisotropy of star-like topologies as compared to the rosette structures of the same total molecular weight.

Keywords

  • conformational properties, path integration, polymers

Publication forum classification

Field of science, Statistics Finland