The concept of Petri nets (PN) is widely used in systems biology and allows modeling of complex biochemical systems like metabolic systems, signal transduction pathways, and gene expression networks. In particular, PN allows the topological analysis based on structural properties, which is important and useful when quantitative (kinetic) data are incomplete… (More)
Figure 2: Representation of the Petri net in simulation mode. Active transitions have a green border or green filling. Last fired transitions have a red border. The number of tokens on a place is represented either by red dots or by a digit.