Dresden 2020 – scientific programme

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BP: Fachverband Biologische Physik

BP 16: Poster IV

BP 16.9: Poster

Tuesday, March 17, 2020, 14:00–16:00, P2/EG

Simulations of polymers in crowded environments — •Niklas Butkevich, Ali Malek, and Stefan Klumpp — Georg-August-Universität Göttingen, Institut für Dynamik komplexer Systeme, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany

Biopolymers, such as DNA, RNA and proteins, are essential components in all living organisms. In cells, these polymers are subject to a crowded environment as well as to active processes. In the present work, molecular dynamics simulations in 3D are performed to study static and dynamical properties of flexible polymer chains in a bath of passive and active crowders. The model is based on the Rouse model with additional repulsive interactions. The active bath has a pronounced effect on the configurational dynamics of the polymer: by increasing the density of the passive crowders, the squared end-to-end distance decreases, the motion of the center of mass slows down and the chain relaxation is delayed. The model is extended to self-propelled active particles that drive the system out of equilibrium.