The model contains one compartment called "compartment". There are three species named S1, S2 and S3 and one global parameter named k. The model contains two reactions defined as:
Reaction | Rate |
S1 → S2 | k · S1 · compartment |
S2 → S3 | S1 · S2 · compartment |
Reaction S2 → S3 defines one local parameter S1.
Note that the id of the local parameter S1 shadows the species S1. Within the defining reaction, the value of the locally-defined symbol S1 must be used.
The initial conditions are as follows:
Value | Units | |
Initial amount of S1 | 3.0 × 10−4 | mole |
Initial amount of S2 | 0 | mole |
Initial amount of S3 | 0 | mole |
Value of parameter k | 2 | second-1 |
Value of local parameter S1 | 1 | second-1 |
Volume of compartment "compartment" | 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.