The model contains one compartment called C. There are two species called S1 and S2 and two parameters called kf and kr. The model contains two reactions defined as:
Reaction | Rate |
S1 ↔ S2 | (kf · S1 − kr · S2) · C |
S3 ↔ S4 | (kf · S3 − kr · S4) · C |
Reaction S1 ↔ S2 defines two local parameters kf and kr which have a scope local to the defining reaction and are different from the global parameters kf and kr used in the Reaction S3 ↔ S4.
The initial conditions are as follows:
Value | Units | |
Initial amount of S1 | 1.0 | mole |
Initial amount of S2 | 0 | mole |
Value of parameter kf | 0.9 | second-1 |
Value of parameter kr | 0.075 | second-1 |
Value of local parameter kf | 0.8 | second-1 |
Value of local parameter kr | 0.06 | second-1 |
Volume of compartment C | 1 | litre |
The species values are given as amounts of substance to make it easier to use the model in a discrete stochastic simulator, but (as per usual SBML principles) their symbols represent their values in concentration units where they appear in expressions.