Protein concentrations of the pathway models.

System 1 is the model based on the proteomic data only with normalized protein concentrations. System 2 is the model based on both proteomic and other experimental data with absolute protein concentrations. Except the variables in this table, the initial conditions of other variables are zeros. The concentrations of three phosphatases were calculated based on both the absolute kinase concentration in [30] and ratio of phosphatase concentration to the corresponding kinase concentration in [26].