For this model, only one metabolite is left out from the first 10. Changing names If for some reason you want to change the name of one metabolite simply edit its name in the leftmost column in this dialog box.
Metabolites can be either variables or parameters of the model.
By default all are varibles, i.e. their concentrations are allowed to vary during a time course or steady-state calculation. Initial concentrations Each metabolite needs to be set to an initial concentration. This is the value of the concentration at the beggining of a time course, or the initial guess for the steady-state calculation. Note that the participants of the enzyme cascade were all set to be in their inactive form in the initial state. Compartments Lastly, in multi-compartment models you must also select the compartment where each metabolite resides in.