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Area of Science:

  • Synthetic Biology
  • Polymer Chemistry
  • Biochemistry

Background:

  • Synthetic digital polymers offer novel platforms for information storage.
  • Toehold-mediated strand displacement (TMSD) is a nucleic acid interaction mechanism.
  • Biohybrid macromolecules combine synthetic polymers with biological components.

Purpose of the Study:

  • To investigate TMSD as a tool for editing information in synthetic digital polymers.
  • To synthesize and characterize DNA-polymer biohybrid macromolecules.
  • To demonstrate the erasure and rewriting of digital information using TMSD.

Main Methods:

  • Automated phosphoramidite chemistry for synthesizing DNA-polymer biohybrids.
  • Characterization using HPLC, mass spectrometry, and polyacrylamide gel electrophoresis (PAGE).
  • Utilizing TMSD with substrate, input, and output macromolecules for information manipulation.

Main Results:

  • Successful synthesis of uniform DNA-polymer biohybrid macromolecules.
  • Demonstration of efficient TMSD leading to the release of a digitally encoded segment.
  • Conjugation of DNA to synthetic segments facilitated characterization and PAGE visualization.

Conclusions:

  • TMSD is an effective tool for editing information in synthetic digital polymers.
  • Biohybrid superstructures can be dynamically controlled using TMSD.
  • DNA conjugation aids in the characterization of TMSD processes in biohybrid systems.