The model contains one compartment called C. There are four species called S1, S2, S3 and S4 and one parameter called k. The model contains two reactions defined as:
Reaction | Rate |
S1 + S2 → S3 | k · S1 · S2 · C |
S3 → S1 + S2 | k · S3 · C |
Each reaction defines one local parameter k which has a scope local to the defining reaction and is different from the global parameter k used in the RateRule.
The model contains one rule:
Type | Variable | Formula |
Rate | S4 | multiply(k2, 4 × 10−6 |
The model contains one functionDefinition defined as:
Id | Arguments | Formula |
multiply | x, y | x · y |
The initial conditions are as follows:
Value | Units | |
Initial amount of S1 | 1.5 × 10−6 | mole |
Initial amount of S2 | 2.0 × 10−6 | mole |
Initial amount of S3 | 1.5 × 10−6 | mole |
Initial amount of S4 | 1 × 10−7 | mole |
Value of parameter k | 0.25 | second-1 |
Value of local parameter k (R1) | 0.75 × 106 | litre mole-1 second-1 |
Value of local parameter k (R2) | 0.3 | 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.