- AutorIn
- Jörg Schnauß
- Martin Glaser
- Carsten Schuldt
- Tom Golde
- Tina Händler
- Sebastian Schmidt
- Stefan Diez
- Josef Käs
- Titel
- Motor-free force generation in biological systems
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:15-qucosa-198921
- Quellenangabe
- Diffusion fundamentals - 23
- Quellenangabe
- Diffusion fundamentals 23 (2015) 5, S. 1-5
- Erstveröffentlichung
- 2015
- Abstract (EN)
- A central part of soft matter physics is the investigation of effects in an active environment. These systems are driven out of equilibrium by a constant energy consumption. In biological systems, for instance, energy is consumed in the dynamic polymerization process of cytoskeletal filaments or by motor-filament interactions. These active processes convert chemical energy into mechanical work and impede a trapping of cellular structures in thermodynamically frozen states. Thus, active soft matter is crucial for biological systems to fulfill a broad range of tasks. Inherent physical principles relying on entropy maximizing arguments, however, cannot be easily switched off even in active systems. Cells might even employ these principles to accomplish certain tasks without the need to arrange elaborate, energy dissipating structures. Within the presented studies we demonstrate possibilities how biological relevant forces can be generated in the absence of any active accessory proteins. The presented studies are based on the cytoskeletal key components actin and microtubules. We demonstrate different approaches ranging from light induced softening to cross-linker expansion, which realize entropy driven contractions of the according system.
- Freie Schlagwörter (DE)
- Diffusion, Transport
- Freie Schlagwörter (EN)
- diffusion, transport
- Klassifikation (DDC)
- 530
- Herausgeber (Institution)
- Universität Leipzig
- Technische Universität Dresden
- Max Planck Institute of Molecular Cell Biology and Genetics
- URN Qucosa
- urn:nbn:de:bsz:15-qucosa-198921
- Veröffentlichungsdatum Qucosa
- 03.03.2016
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch