Cellular regulation is a result of complex interactions arising from DNA–protein and protein–protein binding, autoreg-ulation, and compartmentalization and shuttling of regula-tory proteins. Experiments in molecular biology have identified these mechanisms recruited by a regulatory used to complement the knowledge-base provided byin vitroexperimental methods. Interactions identified byin vitroexperiments can lead to the hypothesis of multiple candidate models explaining the in vivo mechanism. .
