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RNA Control by Photoreversible Acylation.

Willem A Velema1, Anna M Kietrys1, Eric T Kool1

  • 1Department of Chemistry , Stanford University , Stanford , California 94305 , United States.

Journal of the American Chemical Society
|February 24, 2018
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Summary
This summary is machine-generated.

Researchers developed a new method for external photocontrol of RNA function. This technique allows optical switching of RNA hybridization and catalytic activity, expanding applications in biological studies.

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Area of Science:

  • Molecular Biology
  • Biochemistry
  • Chemical Biology

Background:

  • External photocontrol of RNA function is crucial for studying nucleic acid biology.
  • Current methods using photocaged nucleobases are limited to short synthetic RNAs.

Purpose of the Study:

  • To develop a novel postsynthetic method for photocontrol over RNA.
  • To enable optical control of RNA hybridization, folding, and catalytic function.

Main Methods:

  • Postsynthetic acylation of 2'-hydroxyl groups with photoprotecting groups.
  • One-step introduction of photoprotecting groups to block and restore RNA hybridization.
  • Application of polyacylation (cloaking) to control hammerhead ribozyme activity.
  • Demonstration on a transcribed 237 nt RNA aptamer for cellular studies.

Main Results:

  • Efficiently blocks RNA hybridization, which is reversible upon light exposure.
  • Demonstrates optical control over RNA catalytic function using a hammerhead ribozyme.
  • Successfully switches on RNA folding in a cellular context using a transcribed aptamer.

Conclusions:

  • The new postsynthetic acylation method provides photocontrol over RNA function.
  • This approach expands the utility of photocontrollable RNAs for biological studies.
  • The method shows potential for applications requiring optical switching of RNA behavior in cells.