2014/12/31 by Viktoria Blavatska, V Blavatska, Ralf Metzler +1 · 1 citation
Biochemistry, Genetics and Molecular Biology · Materials Science · Physics and Astronomy · #DNA and Nucleic Acid Chemistry #Genomics and Chromatin Dynamics #Quasicrystal Structures and Properties #cond-mat.soft
paper · pdf · doi:10.1088/1751-8113/48/13/135001
published as J. Phys. A: Math. Theor. 48, 135001 (2015)
arxiv created 2015/01/19 · openalex publication_date 2015/03/10 · arxiv updated 2015/04/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 1 loops (petals) and f 2 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 g and asphericity A ^ of typical conformation as functions of parameters f 1 , f 2 . 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.