Anomalous diffusion in living yeast cells
Abstract
The viscoelastic properties of the cytoplasm of living yeast cells were investigated by studying the motion of lipid granules naturally occurring in the cytoplasm. A large frequency range of observation was obtained by a combination of video-based and laser-based tracking methods. At time scales from 10-4 sec to 10^2 sec, the lipid granules typically perform subdiffusive motion. This subdiffusive behaviour is thought to be due to the presence of an actin polymer network and membranous structures in the cytoplasm. At times longer than 0.1 sec other modes of motion of the granules also occur, namely normal Brownian motion, directed motion, and confined motion.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2004
- Bibcode:
- 2004APS..MAR.R1112M