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A reversibly gated protein-transporting membrane channel made of DNA

Dey, Swarup; Dorey, Adam; Abraham, Leeza; Xing, Yongzheng; Zhang, Irene; Zhang, Fei; Howorka, Stefan; (2022) A reversibly gated protein-transporting membrane channel made of DNA. Nature Communications , 13 (1) , Article 2271. 10.1038/s41467-022-28522-2. Green open access

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Abstract

Controlled transport of biomolecules across lipid bilayer membranes is of profound significance in biological processes. In cells, cargo exchange is mediated by dedicated channels that respond to triggers, undergo a nanomechanical change to reversibly open, and thus regulate cargo flux. Replicating these processes with simple yet programmable chemical means is of fundamental scientific interest. Artificial systems that go beyond nature's remit in transport control and cargo are also of considerable interest for biotechnological applications but challenging to build. Here, we describe a synthetic channel that allows precisely timed, stimulus-controlled transport of folded and functional proteins across bilayer membranes. The channel is made via DNA nanotechnology design principles and features a 416 nm2 opening cross-section and a nanomechanical lid which can be controllably closed and re-opened via a lock-and-key mechanism. We envision that the functional DNA device may be used in highly sensitive biosensing, drug delivery of proteins, and the creation of artificial cell networks.

Type: Article
Title: A reversibly gated protein-transporting membrane channel made of DNA
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41467-022-28522-2
Publisher version: https://doi.org/10.1038/s41467-022-28522-2
Language: English
Additional information: © 2022 Springer Nature Limited. This article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).
Keywords: DNA, DNA nanostructures, Nanopores, Nanoscale biophysics, Synthetic biology
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10147749
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