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Related Experiment Videos

Blockable Zn10 L15 Ion Channels through Subcomponent Self-Assembly.

Cally J E Haynes1, Jinbo Zhu2, Catalin Chimerel2

  • 1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.

Angewandte Chemie (International Ed. in English)
|October 13, 2017
PubMed
Summary

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Researchers created metal-organic anion channels using Zn10L15 prisms. These channels transport chloride anions in lipid membranes and can be blocked by dodecyl sulfate, demonstrating controllable anion transport.

Area of Science:

  • Supramolecular chemistry
  • Materials science
  • Membrane biophysics

Background:

  • Metal-organic frameworks (MOFs) offer tunable structures for various applications.
  • Self-assembly is a powerful method for constructing complex molecular architectures.
  • Anion transport across biological membranes is crucial for cellular function.

Purpose of the Study:

  • To synthesize and characterize Zn10L15 pentagonal prisms as anion channels.
  • To investigate the insertion and function of these prisms in lipid membranes.
  • To explore the controllable transport of anions through these artificial channels.

Main Methods:

  • Subcomponent self-assembly for prism synthesis.
  • Ion-current measurements to assess channel activity.
Keywords:
lipid membranesmetal-organic cagessubcomponent self-assemblysupramolecular chemistrysynthetic ion channels

Related Experiment Videos

  • Fluorescence spectroscopy to study prism-membrane interactions.
  • Solid-state and solution studies to analyze anion binding.

    • Main Results:

    • Zn10L15 pentagonal prisms were successfully prepared via self-assembly.
    • Prisms inserted into lipid bilayers and facilitated chloride anion transport.
    • Tosylate anions blocked channels in solid and solution states.
    • Dodecyl sulfate acted as a blocker in membranes, inhibiting chloride transport.

    Conclusions:

    • Zn10L15 prisms function as anion-selective channels in lipid membranes.
    • Anion transport can be initiated upon membrane insertion.
    • The transport process is reversible and can be modulated by specific blockers like dodecyl sulfate.
    • These findings open avenues for developing responsive and switchable artificial membrane channels.