Description Usage Arguments Details Value Special results References See Also Examples
Gives the effective equilibrium for relative concentrations
1 | predict_eff(E_ini_fun,B_fun,A_fun,correl_fun, tol=0.00000001)
|
E_ini_fun |
Numeric vector of initial concentrations |
B_fun |
Numeric vector of global co-regulation coefficients. Same length as |
A_fun |
Numeric vector of activities |
correl_fun |
Character string indicating the abbreviation of the constraint applied on the system |
tol |
Tolerance for function |
Gives values at effective equilibrium for relative concentrations and corresponding driving variable τ. This equilibrium corresponds to null derivative of relative concentrations, with a maximum for flux.
Effective equilibrium is found by searching the zero for response coefficients.
The R function uses in this objective is uniroot
.
Note that sum of 1/B_fun
need to be equal to 1.
When there are regulation groups, preferably use predict_grp
.
List of three elements:
$pred_e
: numeric vector of relative concentrations at effective equilibrium. Same length as A_fun
$pred_tau
: numeric value of driving variable tau at effective equilibrium
$pred_E
: numeric vector of absolute concentrations at effective equilibrium. Same length as A_fun
In case of independence (correl_fun="SC"
) or positive regulation (correl_fun="RegPos"
), there is no effective equilibrium, and function predict_eff
stops.
In case of competition (correl_fun="Comp"
), effective and theoretical equilibria are confounded. Function predict_eff
also stops, so use preferably function predict_th
to compute equilibrium.
If E_ini_fun
is a multiple of 1/B_fun
, effective equilibrium is confounded with theoretical equilibrium and initial point (see droites
for details).
Function predict_eff
returns E_ini_fun
for $pred_E
and 0 for $pred_tau
, with a warning message.
Coton et al. (2021)
Use function activities
to compute enzyme activities.
Use function is.correl.authorized
to see allowed constraints for correl_fun
.
Use function predict_th
to compute theoretical equilibrium.
Use function predict_grp
to predict equilibria when there are co-regulation groups.
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