title: Optimal control mode of a biochemical feedback system.
abstract: An optimal feedback system for constant-value control of biochemical reaction system was investigated by computer simulations. A feedback system containing a cyclic enzyme system where two enzyme types share a substrate in a cyclic manner, was found to be the most reliable one. This feedback system has a capability to keep the stationary value of the end product at a desired level against not only exogenous substrate supply but also endogenous parametric disturbances. The cyclic enzyme system installed as a control element of this feedback system played the role of comparator in this feedback system. The control mode of this feedback system was in good agreement with that of a system established by means of optimization technique based on the maximum principle. Also bang - bang control could be performed in this biochemical feedback system as well as in electrical one.
mesh_terms: D004798:Enzymes / Q000378:metabolism*; D005246:Feedback; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological
chemical_list: D004798:Enzymes