title: Enzymatic AND-gate based on electrode-immobilized glucose-6-phosphate dehydrogenase: towards digital biosensors and biochemical logic systems with low noise.
abstract: Electrode-immobilized glucose-6-phosphate dehydrogenase is used to catalyze an enzymatic reaction which carries out the AND logic gate. This logic function is considered here in the context of biocatalytic processes utilized for the biocomputing applications for "digital" (threshold) sensing/actuation. We outline the response functions desirable for such applications and report the first experimental realization of a sigmoid-shape response in one of the inputs. A kinetic model is developed and utilized to evaluate the extent to which the experimentally realized gate is close to optimal.
authors.affiliation: Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Privman
authors.forename: Valber
authors.initials: V
authors.lastname: Pedrosa
authors.forename: Dmitriy
authors.initials: D
authors.lastname: Melnikov
authors.forename: Marcos
authors.initials: M
authors.lastname: Pita
authors.forename: Aleksandr
authors.initials: A
authors.lastname: Simonian
authors.forename: Evgeny
authors.initials: E
authors.lastname: Katz
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D039301:Computers, Molecular; D004800:Enzymes, Immobilized / Q000737:chemistry; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005954:Glucosephosphate Dehydrogenase / Q000737:chemistry*; D008839:Microelectrodes; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
chemical_list: D004800:Enzymes, Immobilized; D005954:Glucosephosphate Dehydrogenase