This volume contains the proceedings of the 45th Mosbach Colloquium of the German Society for Biological Chemistry (GBCh). The 1994 meeting was the first in this series devoted to the cytoskeleton. This complex system enables the eukaryotic cell to form discrete contacts with neighboring cells and the extracellular matrix, to differentiate, to move, change shape, transport organelles, and proliferate. These diverse tasks are performed by three distinct fibrillar networks: microfilaments, microtubules, and intermediate filaments, which are composed of structural and regulatory elements. The...