TO1-3PEG-Biotin Fluorophore

G9550.5 mg/ml (500 µl)



RNA Mango technology is based on the specific binding of the RNA Mango Aptamer and a Thizole Orange (TO) bi-functional dye. The main features of this technology is the tight binding between the dye and aptamer (KD ≈ 3nM) , and the strong ~1000X enhancement of the dye’s fluorescence when bound to the Mango apatmer (Fluorescent enhancement FE=1,100).The TO dye has a number of other desirable properties including:

  • small size
  • lack of toxicity
  • plasma and nuclear membrane permeability
  • short intracellular half-life
  • the accessibility of a broad wavelength range simply via substitutions and alterations to the TO structure

TO1-biotin is the standard variety of TO dye for RNA Mango experiments; other dye variants will also be available soon.

Watch RNA Mango in Action

Transcription reaction were carried out in 300 µL volumes using T7 RNA polymerase (400 U, 50U/µL, applied biological materials), 0.5 µM TO1-3PEG-Biotin (applied biological materials), in 8 mM GTP, 5 mM CTP and ATP, 2 mM UTP, 40 mM TRIS buffer pH 7.9, 2.5 mM spermidine, 26 mM MgCl2, 20 mM KCl, Pyrophosphatase (0.5 U, 0.1 U/µL, ThermoFisher Scientific), and 0.01% Triton X-100. To each sample, either water (Negative), 0.33 µM DNA template (Mango Transcription), or 500 nM final Mango III A10U RNA (Positive) was added. Samples were visualized in a blue light box, movie is played back at 30X speed.


The most advanced RNA tracking, visualization and pull down technology.

Technology for studying the diverse cellular roles of RNA has lagged behind the tools for studying DNA and proteins, but innovative researchers are working to change that! One such researcher is Dr. Peter Unrau of Simon Fraser University. He and his team have created RNA Mango, a novel technology with a number of useful applications.

Unit quantity0.5 mg/ml (500 µl)
Storage Condition

Stored at -20°C and protect from light.


Supporting Protocol



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