The living cell is a dynamical system of molecular interactions. The unifying theme of my research is to understand how cellular processes are organized in time and space. How do the underlying molecular networks determine cellular physiology in terms of temporal and spatial controls? Besides my work in the eukaryotic cell cycle control field, which is organized around cyclin-dependent kinases and their regulators, I am also interested in cellular morphogenesis. I am using mathematical models to understand these problems of biological organization. I am building these mathematical models based on the extensive molecular biological and physiological data available. I am convinced that this mathematical approach is required for deciphering the intricacies of biological systems.