The model contains one compartment called C. There are two species called S1 and S2 and two parameters called k1 and p1. The model contains one reaction:
Reaction | Rate |
S1 → S2 | k1 · S1 · C |
The model contains one initialAssignment:
Variable | Formula |
S2 | p1 · S1 · time |
where the symbol 'time' denotes the current simulation time.
Note: SBML's InitialAssignment take effect at time t < 0 and continue to have effect up to and including time t = 0, overriding any initial values. In this model, the initial value for the species S1 has not been explicitly declared and must be calculated using the InitialAssignment at time = 0.
The initial conditions are as follows:
Value | Units | |
Initial amount of S1 | 1.5 × 10−3 | mole |
Initial amount of S2 | undeclared | mole |
Value of parameter p1 | −0.5 | second-1 |
Value of parameter k1 | 1 | second-1 |
Volume of compartment C | 1 | litre |
The species' initial quantities are given in terms of substance units 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.
Note: The test data for this model was generated from an analytical solution of the system of equations.