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Related Concept Videos

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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Related Experiment Video

Updated: Apr 18, 2026

Single-step Purification of Macromolecular Complexes Using RNA Attached to Biotin and a Photo-cleavable Linker
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RNA complex purification using high-affinity fluorescent RNA aptamer tags.

Shanker Shyam S Panchapakesan1, Sunny C Y Jeng, Peter J Unrau

  • 1Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, Canada.

Annals of the New York Academy of Sciences
|January 15, 2015
PubMed
Summary
This summary is machine-generated.

New RNA tagging systems like RNA Spinach and Mango offer brighter fluorescence for studying RNA-protein complexes. These aptamer-based systems enable simultaneous purification and tracking of complexes, overcoming traditional isolation challenges.

Keywords:
RNA MangoRNA aptamersRNA purification tagsbinding affinityfluorescent enhancementin vitro selection

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Area of Science:

  • Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • RNA molecules are crucial for numerous cellular functions.
  • Studying RNA-protein complexes is challenging due to difficulties in isolation and analysis.
  • Existing purification methods for RNA and proteins have limitations.

Purpose of the Study:

  • To compare and contrast current RNA and protein purification techniques.
  • To evaluate the potential of novel RNA-tagging systems, specifically RNA Spinach and RNA Mango.
  • To explore the application of these systems in purifying and tracking RNA-protein complexes.

Main Methods:

  • Review and comparison of established RNA and protein purification strategies.
  • Analysis of RNA-tagging systems utilizing RNA aptamers (RNA Spinach, RNA Mango) and fluorophores.
  • Assessment of aptamer binding affinity for effective complex purification and fluorescence tracking.

Main Results:

  • RNA aptamer systems (Spinach, Mango) create highly fluorescent complexes, thousands of times brighter than unbound fluorophores.
  • High aptamer binding affinity allows for simultaneous purification and fluorescence-based tracking of RNA complexes.
  • Discussion of the strengths and weaknesses of these novel RNA tagging technologies.

Conclusions:

  • RNA Spinach and RNA Mango represent promising advancements for studying RNA-protein interactions.
  • These systems offer enhanced sensitivity and dual functionality (purification and tracking) compared to traditional methods.
  • Further research into aptamer binding affinities can optimize their application in molecular biology.