Conformational properties of complex polymers: rosette versus star-like structures
- 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) over cap 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.
| Author details: | Viktoria Blavatska, Ralf MetzlerORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1088/1751-8113/48/13/135001 |
| ISSN: | 1751-8113 |
| ISSN: | 1751-8121 |
| Title of parent work (English): | Journal of physics : A, Mathematical and theoretical |
| Publisher: | IOP Publ. Ltd. |
| Place of publishing: | Bristol |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2015 |
| Publication year: | 2015 |
| Release date: | 2017/03/27 |
| Tag: | conformational properties; path integration; polymers |
| Volume: | 48 |
| Issue: | 13 |
| Number of pages: | 14 |
| Funding institution: | FP7 EU IRSES [N269139, N295302]; Academy of Finland |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
