The model contains one compartment called C. There are four species called S1, S2, S3 and S4 and two parameters called k1 and k2. The model contains two reactions defined as:
Reaction | Rate |
S1 + S2 → (4 * p1)S3 + S4 | k1 · S1 · S2 · C |
2S3 + S4 → S1 + S2 | k2 · S3 · S4 · C |
The model contains two events that assign values to species S1 and S4:
Trigger | Delay | Assignments | |
Event1 | S4 > S2 | − | S1 → 2 × 10−4 | Event2 | S3 > 2.5 × 10−4 | − | S4 → 1 × 10−4 |
The initial conditions are as follows:
Value | Units | |
Initial amount of S1 | 1.0 × 10−4 | mole |
Initial amount of S2 | 1.0 × 10−4 | mole |
Initial amount of S3 | 2.0 × 10−4 | mole |
Initial amount of S4 | 1.0 × 10−4 | mole |
Value of parameter k1 | 0.75 × 104 | litre mole-1 second-1 |
Value of parameter k2 | 0.25 × 104 | litre mole-1 second-1 |
Value of parameter p1 | 0.5 | dimensionless |
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.