Abstract
Advances in the postgenomic technology produce huge data regarding molecular interactions. Systems biology requires a model-based analysis to understand the molecular architecture of biological systems. Systems biology consists of four stages: network identification, system analysis, system control, and system design. First, a large-scale biochemical network model is reconstructed in computer by elucidating gene functions or by inferring gene regulation networks from postgenomic data. Second, we analyze the network architectures that generate robust properties to various types of perturbations and explore some design principles underlying molecular architectures. Third, dynamic behaviors are controlled at the molecular level. Finally, we develop new technologies to rationally design a biochemical system at the molecular levels.
