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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Switchable supramolecular catalysis using DNA-templated scaffolds.

Miguel Angel Aleman Garcia1, Yuwei Hu1, Itamar Willner1

  • 1Institute of Chemistry, The Minerva Center for Biohybrid Complex Systems, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. willnea@vms.huji.ac.il.

Chemical Communications (Cambridge, England)
|December 25, 2015
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Summary
This summary is machine-generated.

This study introduces switchable catalysis using supramolecular scaffolds. Beta-cyclodextrin and adamantane units enable controllable hydrolysis reactions through DNA-based systems.

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Area of Science:

  • Supramolecular Chemistry
  • Catalysis
  • Biotechnology

Background:

  • Supramolecular chemistry utilizes non-covalent interactions to create complex molecular assemblies.
  • Cyclodextrins (CDs) are versatile hosts capable of molecular recognition and catalysis.
  • Nucleic acid scaffolds offer precise control over molecular arrangement and function.

Purpose of the Study:

  • To develop switchable catalytic systems using supramolecular scaffolds.
  • To demonstrate the controlled hydrolysis of m-tert-butylphenyl acetate.
  • To explore the potential of DNA-based systems in catalysis.

Main Methods:

  • Construction of supramolecular scaffolds using beta-cyclodextrin (β-CD) and adamantane functionalized nucleic acids.
  • Formation of duplexes between β-CD-nucleic acid and adamantane-nucleic acid.
  • Utilizing K(+)-stabilized G-quadruplex units to form β-CD/adamantane duplexes.
  • Hemin binding to create bifunctional DNA scaffolds.

Main Results:

  • Demonstrated switchable β-CD-induced hydrolysis of m-tert-butylphenyl acetate.
  • Successfully created a switchable catalytic system via a β-CD/adamantane nucleic acid duplex.
  • Developed a second system using G-quadruplex units for cooperative duplex formation.
  • Engineered a bifunctional DNA scaffold with alternate catalytic functions through hemin binding.

Conclusions:

  • Supramolecular β-CD/adamantane oligonucleotide scaffolds provide a versatile platform for switchable catalysis.
  • The developed systems offer precise control over chemical reactions through molecular recognition.
  • DNA-based supramolecular assemblies hold significant potential for advanced catalytic applications.