Purified motor proteins organise microtubules in micrometre-sized droplets


The Microtubule Cytoskeleton

The Microtubule Cytoskeleton.

The cytoskeleton is essential for the internal organisation of eukaryotic cells.

Microtubules, motor proteins and other microtubule-associated proteins form a mechano-chemical network that determines the dynamic and adaptable nature of intracellular order. Distinct forms of cytoskeletal architectures are required for correct cell division and cell differentiation. How the components of the microtubule cytoskeleton work together as a system is not understood.

We address these questions using a combination of physical biochemistry and quantitative cell biology. Advanced fluorescence microscopy (down to the single molecule level), in vitro reconstitutions of dynamic cytoskeleton behaviour, microfabrications and microfluidics, as well as eukaryotic cell culture are important tools in our research.

Our aim is to understand in quantitative terms the molecular mechanisms underlying cytoskeleton architecture and function. We focus on the question of how the microtubule cytoskeleton organises itself within the boundary of the cellular membrane and how the mitotic spindle assembles and functions during cell division. We aim at being able to predict the behaviour of the dynamic cytoskeleton based on quantitative knowledge of the properties of its constituents.

In the future, we will address the following questions:

  • How are microtubule cytoskeleton organization and dynamics regulated?
  • To which extent can reverse engineering of the cytoskeleton inform us about the design principles of the cytoskeleton?
  • How is cytoskeleton organization affected by cellular membrane confinement?

Selected publications