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  • Title: Single-Particle Kinetics of Immobilized Enzymes by Harnessing the Autofluorescence of Co-Immobilized Cofactors.
    Author: Benítez-Mateos AI.
    Journal: Methods Mol Biol; 2020; 2100():309-317. PubMed ID: 31939132.
    Abstract:
    The co-immobilized enzymes and cofactors onto porous microparticles work as self-sufficient heterogeneous biocatalysts whose catalytic activity can be easily monitored by means of the cofactors autofluorescence. The reduction step of some cofactors as NAD+ and FAD+ to NADH and FADH2, respectively, involves an increase of its autofluorescence. This phenomenon is harnessed to image and analyze the enzymatic reactions catalyzed by cofactor-dependent enzymes at real time and single-particle level during the operational process. Due to the universality and highly accessibility of fluorescence microscopy, the strategy described here allows a straightforward and more accurate analysis at micro-scale of heterogeneous biocatalysts. These studies promote and support the rational design and optimization of biocatalysts toward highly efficient heterogeneous biocatalytic reactions.
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