Stoichiometry

From BioNetWiki

Observables may now be defined based on the stoichiometry of a molecule. This is useful for problems involving oligomerization. For example, if we want to have observables for several possible oligomer sizes we can define the observables

begin observables
 Molecules monomers R()==1
 Molecules dimers   R()==2
 Molecules trimers  R()==3
 Molecules big_complexes R()>3
end observables

monomers corresponds to the total concentration of monomeric receptors. dimers corresponds to the total concentration of receptors in dimers. trimers corresponds to the total concentration of receptors in trimers. big_complexes corresponds to the total concentration of receptors in aggregates larger than trimers.

If we wanted the concentration of the aggregates themselves, we would have used the Species keyword instead of Molecules in the definitions.