Moridi, Negar

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Moridi, Negar

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Publikation

Enzyme Shielding in an Enzyme-thin and Soft Organosilica Layer

2016, Correro, Maria Rita, Moridi, Negar, Schützinger, Hansjörg, Sykora, Sabine, Ammann, Erik, Peters, E. Henrik, Dudal, Yves, Corvini, Philippe, Shahgaldian, Patrick

The fragile nature of most enzymes is a major hindrance to their use in industrial processes. Herein, we describe a synthetic chem. strategy to produce hybrid org.​/inorg. nanobiocatalysts; it exploits the self-​assembly of silane building blocks at the surface of enzymes to grow an organosilica layer, of controlled thickness, that fully shields the enzyme. Remarkably, the enzyme triggers a rearrangement of this organosilica layer into a significantly soft structure. We demonstrate that this change in stiffness correlates with the biocatalytic turnover rate, and that the organosilica layer shields the enzyme in a soft environment with a markedly enhanced resistance to denaturing stresses.