2016
DOI: 10.1002/anie.201603183
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Directional Regulation of Enzyme Pathways through the Control of Substrate Channeling on a DNA Origami Scaffold

Abstract: Artificial multi-enzyme systems with precise and dynamic control over the enzyme pathway activity are of great significance in bionanotechnology and synthetic biology. Herein, we exploit a spatially addressable DNA nanoplatform for the directional regulation of two enzyme pathways (G6pDH-MDH and G6pDH-LDH) through the control of NAD(+) substrate channeling by specifically shifting NAD(+) between the two enzyme pairs. We believe that this concept will be useful for the design of regulatory biological circuits f… Show more

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Cited by 131 publications
(123 citation statements)
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“…Besides one‐directional substrate transport by multienzyme complexes along a single enzymatic pathway, precise and dynamic control over multiple pathways would be interesting. One such example of switching between two different enzymatic pathways was reported recently for the G6pDH/MDH and G6pDH/LDH enzyme pairs . The enzymatic reactions tested for G6pDH and MDH are exactly the same as described above in Section 4.1, whereas LDH converts pyruvate into lactate in the presence of NADH.…”
Section: Scaffolded Dna Origami Templatesmentioning
confidence: 80%
See 1 more Smart Citation
“…Besides one‐directional substrate transport by multienzyme complexes along a single enzymatic pathway, precise and dynamic control over multiple pathways would be interesting. One such example of switching between two different enzymatic pathways was reported recently for the G6pDH/MDH and G6pDH/LDH enzyme pairs . The enzymatic reactions tested for G6pDH and MDH are exactly the same as described above in Section 4.1, whereas LDH converts pyruvate into lactate in the presence of NADH.…”
Section: Scaffolded Dna Origami Templatesmentioning
confidence: 80%
“…By increasingt he relative proportion of MDH, it is possible to enhance the efficiency and the rates of associated cascade reactions, as demonstratedb yF ue tal. [15] To mimic the multienzyme complexes of living cells, enzymesa re often immobilized on carriers.A mong the various approaches (such as using protein [16][17][18][19] and lipid bilayer [20] templates) for the development of artificial enzyme cascade systems, nucleic acids and their nanostructures have recently been applied to achieve particulars patialo rganizationso f enzymes to form metabolons that transfer the substrates between one another.T he common DNA templates used so far are duplex DNA (dsDNA), either in bulk solution [21] or immobilized onto the surfaceo famicroplate [22,23] or an electrode, [24] aptamer-domain-containing DNAs, [25,26] Y-shaped DNA, [27] long DNA chains prepared by the rolling circle amplification (RCA) process, [28] hexagon-like DNA strips, [29] DNA double-crossover (DX) tiles, [15] tuneable DNA tweezers made of DNA DX motifs, [30] three-point star DNA scaffoldsa nd scaffoldedD NA origami [31] with 2D structures, [10,14,[32][33][34] as well as 3D tubes [32,35] and nanocages. [36] Although these DNA-templated enzyme cascade reactions are limited to in vitro studies, they provide ideal systemsf or exploring the chemistry behind cellular enzyme cascade reactions.…”
Section: Introductionmentioning
confidence: 99%
“…10d, the reaction specificity of the G6PDH-MDH cascade was also increased in the presence of a competing enzyme of lactate dehydrogenase (LDH). NAD + -modified DNA arms have also been successfully used to regulate the pathway direction between G6PDH-MDH and G6PDH-LDH [123], with the directional regulation of enzyme pathways controlled by DNA strand displacement [123] or the photo-responsive reaction (Fig. 11a) [124].…”
Section: Biomimetic Assembly Of Macromolecular Complexesmentioning
confidence: 99%
“…GOx: glucose oxidase, HRP: horseradish peroxidase, ABTS: 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid. D) Directional regulation of enzyme pathways through the control of substrate channeling on a DNA origami scaffold . G6pDH: glucose‐6‐phosphate dehydrogenase, LDH: lactate dehydrogenase, MDH: malate dehydrogenase.…”
Section: Directed Assembly Of Soluble Proteins On Dna Origamimentioning
confidence: 99%