Biosensing system with extended lifetime via cofactor recycling
First Claim
1. A biosensing system that measures the concentration of an analyte in a solution, said biosensing system comprisinga first biocomponent that catalyzes the reaction of said analyte and oxygen and uses a cofactor selected from the group consisting of NADH, NADPH, FADH, FADH2, FMNH, FMNH2, anda second biocomponent that catalyzes the reaction of a cofactor selected from the group consisting of NAD+, NADP+, FADH, FMNH, FAD and FMN, and an electron donor, andwherein said first biocomponent and said second biocomponent are immobilized within a matrix, andwherein said matrix is in contact with a transducer layer, andwherein said transducer layer is part of an optode.
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Abstract
The present disclosure relates to biosensing systems and biosensing elements having increased storage capability and increased functional lifetimes through using compositions and methods for recycling cofactors.
46 Citations
19 Claims
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1. A biosensing system that measures the concentration of an analyte in a solution, said biosensing system comprising
a first biocomponent that catalyzes the reaction of said analyte and oxygen and uses a cofactor selected from the group consisting of NADH, NADPH, FADH, FADH2, FMNH, FMNH2, and a second biocomponent that catalyzes the reaction of a cofactor selected from the group consisting of NAD+, NADP+, FADH, FMNH, FAD and FMN, and an electron donor, and wherein said first biocomponent and said second biocomponent are immobilized within a matrix, and wherein said matrix is in contact with a transducer layer, and wherein said transducer layer is part of an optode.
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16. A method for measuring the concentration of an analyte in a solution using a biosensing system wherein
said biosensing system comprises biocomponents, and wherein a first biocomponent of said biosensing system is an oxygenase enzyme that catalyzes a reaction that uses oxygen, said analyte and a reduced cofactor as reactants and produces oxidized cofactor, and wherein a second biocomponent of said biosensing system is a dehydrogenase enzyme that catalyzes a reaction that uses said oxidized cofactor and an electron donor as reactants and produces said reduced cofactor, and wherein said reduced cofactor is used in the reaction catalyzed by said first biocomponent, and wherein the oxygen concentration in said solution is measured by said biosensing system, and wherein the measured oxygen concentration in said solution is used to calculate the measurement of the concentration of said analyte in said solution.
Specification