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• W2019222095 startingPage "9580" @default.
• W2019222095 abstract "A number of organisms and organelles are capable of self-propulsion at the micro- and nanoscales. Production of simple man-made mimics of biological transportation systems may prove relevant to achieving movement in artificial cells and nano/micronscale robotics that may be of biological and nanotechnological importance. We demonstrate the propulsion of particles based on catalytically controlled molecular self-assembly and fiber formation at the particle surface. Specifically, phosphatase enzymes (acting as the engine) are conjugated to a quantum dot (the vehicle), and are subsequently exposed to micellar aggregates (fuel) that upon biocatalytic dephosphorylation undergo fibrillar self-assembly, which in turn causes propulsion. The motion of individual enzyme/quantum dot conjugates is followed directly using fluorescence microscopy. While overall movement remains random, the enzyme-conjugates exhibit significantly faster transport in the presence of the fiber forming system, compared to controls without fuel, a non-self-assembling substrate, or a substrate which assembles into spherical, rather than fibrous structures upon enzymatic dephosphorylation. When increasing the concentration of the fiber-forming fuel, the speed of the conjugates increases compared to non-self-assembling substrate, although directionality remains random." @default.
• W2019222095 created "2016-06-24" @default.
• W2019222095 creator A5010544554 @default.
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• W2019222095 creator A5078332520 @default.
• W2019222095 creator A5086503214 @default.
• W2019222095 date "2014-09-02" @default.
• W2019222095 modified "2023-09-23" @default.
• W2019222095 title "Nanopropulsion by Biocatalytic Self-Assembly" @default.
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• W2019222095 doi "https://doi.org/10.1021/nn503875y" @default.
• W2019222095 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25162764" @default.
• W2019222095 hasPublicationYear "2014" @default.
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