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http://hdl.handle.net/1942/29195
Title: | Active dynamics and spatially coherent motion in chromosomes subject to enzymatic force dipoles | Authors: | PUT, Stefanie Sakaue, Takahiro VANDERZANDE, Carlo |
Issue Date: | 2019 | Source: | PHYSICAL REVIEW E, 99(3) (Art N° 032421) | Abstract: | Inspired by recent experiments on chromosomal dynamics, we introduce an exactly solvable model for the interaction between a flexible polymer and a set of motorlike enzymes. The enzymes can bind and unbind to specific sites of the polymer and produce a dipolar force on two neighboring monomers when bound. We study the resulting nonequilibrium dynamics of the polymer and find that the motion of the monomers has several properties that were observed experimentally for chromosomal loci: a subdiffusive mean-square displacement and the appearance of regions of correlated motion. We also determine the velocity autocorrelation of the monomers and find that the underlying stochastic process is not fractional Brownian motion. Finally, we show that the active forces swell the polymer by an amount that becomes constant for large polymers. | Document URI: | http://hdl.handle.net/1942/29195 | ISSN: | 2470-0045 | e-ISSN: | 2470-0053 | DOI: | 10.1103/PhysRevE.99.032421 | ISI #: | 000462925000006 | Rights: | 2019 American Physical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2020 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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PhysRevE.99.032421(1).pdf Restricted Access | Published version | 986.05 kB | Adobe PDF | View/Open Request a copy |
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