A Synthetic Light-Driven Substrate Channeling System for Precise Regulation of Enzyme Cascade Activity Based on DNA Origami

Yahong Chen, Guoliang Ke, Yanli Ma, Zhi Zhu, Minghui Liu, Yan Liu, Hao Yan, Chaoyong James Yang

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Substrate channeling, in which a metabolic intermediate is directly passed from one enzyme to the next enzyme in an enzyme cascade, accelerates the processing of metabolites and improves substrate selectivity. Synthetic design and precise control of channeling outside the cellular environment are of significance in areas such as synthetic biology, synthetic chemistry, and biomedicine. In particular, the precise control of synthetic substrate channeling in response to light is highly important, but remains a major challenge. Herein, we develop a photoresponsive molecule-based synthetic substrate channeling system on DNA origami to regulate enzyme cascade activity. The photoresponsive azobenzene molecules introduced into DNA strands enable reversible switching of the position of substrate channeling to selectively activate or inhibit the enzyme cascade activity. Moreover, DNA origami allows precise control of interenzyme distance and swinging range of the swing arm to optimize the regulation efficiency. By combining the accurate and addressable assembly ability of DNA origami and the clean, rapid, and reversible regulation of photoresponsive molecules, this light-driven substrate channeling system is expected to find important applications in synthetic biology and biomedicine.

Original languageEnglish
Pages (from-to)8990-8996
Number of pages7
JournalJournal of the American Chemical Society
Volume140
Issue number28
DOIs
Publication statusPublished - Jul 18 2018

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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