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A light-regulated host-guest-based nanochannel system inspired by channelrhodopsins protein

Nature communications, 2017-08, Vol.8 (1), p.260-6, Article 260 [Peer Reviewed Journal]

2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2017 ;ISSN: 2041-1723 ;EISSN: 2041-1723 ;DOI: 10.1038/s41467-017-00330-z ;PMID: 28811463

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  • Title:
    A light-regulated host-guest-based nanochannel system inspired by channelrhodopsins protein
  • Author: Sun, Yue ; Ma, Junkai ; Zhang, Fan ; Zhu, Fei ; Mei, Yuxiao ; Liu, Lu ; Tian, Demei ; Li, Haibing
  • Subjects: Azo Compounds - pharmacology ; Biomimetics ; Channel gating ; Channelrhodopsins - genetics ; Channelrhodopsins - metabolism ; Covalence ; Ion transport ; Ion Transport - drug effects ; Ion Transport - radiation effects ; Ions ; Light ; Membranes ; Ultraviolet Rays
  • Is Part Of: Nature communications, 2017-08, Vol.8 (1), p.260-6, Article 260
  • Description: The light-controlled gating of ion transport across membranes is central to nature (e.g., in protein channels). Herein, inspired by channelrhodopsins, we introduce a facile non-covalent approach towards light-responsive biomimetic channelrhodopsin nanochannels using host-guest interactions between a negative pillararene host and a positive azobenzene guest. By switching between threading and dethreading states with alternating visible and UV light irradiation, the functional channels can be flexible to regulate the inner surface charge of the channels, which in turn was exploited to achieve different forms of ion transport, for instance, cation-selective transport and anion-selective transport. Additionally, the pillararene-azobenzene-based nanochannel system could be used to construct a light-activated valve for molecular transport. Given these promising results, we suggest that this system could not only provide a better understanding of some biological processes, but also be applied for drug delivery and various biotechnological applications.Light-controlled gating of ion transport across membranes occurs in nature via channelrhodopsin nanochannels. Here, the authors show facile non-covalent approach towards light-responsive biomimetic nanochannels using host-guest interactions between a negative pillararene host and a positive azobenzene guest.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2041-1723
    EISSN: 2041-1723
    DOI: 10.1038/s41467-017-00330-z
    PMID: 28811463
  • Source: MEDLINE
    PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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