... be categorized according to regulatory,
stoichiometric, and physiological constraints and differ from each
other on only a single aspect. We distinguish four groups of models:
(1) flux balance models that only define reaction kinetics for
substrate uptake and by-product excretion, (2) kinetic models without
and (3) kinetic models with regulation on the metabolic and/or genetic
level, and (4) resource allocation models.