Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A05: Active Matter and Liquid Crystals in Biological and Bio-Inspired Systems
8:00 AM–10:36 AM,
Monday, March 15, 2021
Room: 05
Sponsoring
Units:
DSOFT DBIO DPOLY GSNP
Chair: Kimberly Weirich, Clemson University
Abstract: A05.00010 : Dynamics of the cytokinetic ring during cell division*
10:12 AM–10:24 AM
Live
Presenter:
Mainak Chatterjee
(Indian Institute of Technology Bombay)
Authors:
Mainak Chatterjee
(Indian Institute of Technology Bombay)
Arkya Chatterjee
(Physics, Massachusetts Institute of Technology)
Amitabha Nandi
(Indian Institute of Technology Bombay)
Anirban Sain
(Indian Institute of Technology Bombay)
theory framework, we explore the coupled dynamics of the flow and the degree of alignment in the acto-myosin network (the order parameter). We find that numerical solutions of the coupled equations are close to the exact results obtained with analytic approximations [1]. The results are also consistent with experimental observations [2,3] on the closure rate of the ring. Our theory [1] also captures how the effective tension in the ring decreases with its radius. We show how this effect significantly slows down the contraction process at later times.
[1] Chatterjee Mainak, et al. arXiv preprint arXiv:2007.13441 (2020).
[2] A. Zumdieck, et al. PLoS ONE 2(8): e696 (2007).
[3] A. S. Maddox, et al. Developmental cell 12, 827 (2007).
*MC acknowledges support from IIT Bombay. AN and AS from SERB, India Project No. ECR/2016/001967 and CRG/2019/005 respectively.
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