Volume 128, Number 6, December 2019
|Number of page(s)||7|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||07 February 2020|
Impact of crowders on the morphology of bacterial chromosomes
1 Institute of Physics - Sachivalaya Marg, Bhubaneswar 751005, India
2 Homi Bhabha National Institute - Anushaktinagar, Mumbai 400094, India
3 Indian Institute of Technology Hyderabad - Kandi, Sangareddy 502285, Telangana, India
4 Institute AMOLF - Science Park 104, 1098XG Amsterdam, The Netherlands
Received: 9 November 2019
Accepted: 8 January 2020
Inspired by recent experiments on the effects of cytosolic crowders on the organization of bacterial chromosomes, we consider a “feather-boa” type model chromosome in the presence of non-additive crowders, encapsulated within a cylindrical cell. We observe spontaneous emergence of complementary helicity of the confined polymer and crowders. This feature is reproduced within a simplified effective model of the chromosome. This latter model further establishes the occurrence of longitudinal and transverse spatial segregation transitions between the chromosome and crowders upon increasing the crowder size.
PACS: 87.16.Sr – Chromosomes, histones / 87.16.Gj – Cell walls / 47.57.Ng – Polymers and polymer solutions
© EPLA, 2020
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