Figure 5
From: Modeling biochemical transformation processes and information processing with Narrator
Describing the mitotic activation of the tyrosine kinase Src (excerpt from [16]). The process node src_activity is used to calculate the total enzymatic activity of the kinase Src, which is represented in four different phosphorylation states. The value of the src_activity node is then reused in processes that represent reactions catalyzed by this kinase, such as autophosphorylation (E), phosphorylation of PTPα (F) and Cbp (G). This graphical notation directly corresponds to the common method of modeling biochemical systems using differential-algebraic equations.