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Chili FL Aptamer

$ 132.00 USD
Cat#: 
CR60
Nucleotides: 
52
Sequence: 
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Chili FL Aptamer is a fluorescent RNA aptamer consisting of 52 nucleotides that activates fluorescence through a unique mechanism of intermolecular proton transfer to guanine, producing a large Stokes shift. This structural property allows Chili to bind and activate specific fluorogenic dyes, generating a bright, detectable fluorescent signal upon binding. This makes it a powerful tool for visualizing RNA directly in biological systems without the need for protein-based tags. Unlike traditional fluorescent reporter systems that rely on bulky protein fusions, Chili is a compact RNA-based tag that can be genetically encoded and expressed inside living cells, enabling real-time tracking of RNA molecules with minimal structural disruption.

Common research applications include:

  • Live-cell RNA imaging: Tagging mRNAs, lncRNAs, or ncRNAs to track their localization, movement, and dynamics within living cells in real time
  • RNA transcription monitoring: Fusing Chili to RNA of interest to monitor transcription levels and kinetics using fluorescence microscopy or plate-based assays
  • RNA secondary structure studies: Using Chili's well-characterized structure (PDB: 7OA3) to investigate RNA folding and aptamer-ligand interactions
  • Biosensor development: Incorporating Chili into RNA-based biosensor platforms to detect specific metabolites, proteins, or nucleic acid targets
  • RNA–protein interaction (structure-function) studies: Tagging RNA of interest to observe how RNA interacts with RNA-binding proteins in cellular environments

If you desire custom RNA fused with Chili FL Aptamer, please use the custom RNA tab and fill in the details to get a custom quote.

  • 1) Mieczkowski M, et al. Large Stokes shift fluorescence activation in an RNA aptamer by intermolecular proton transfer to guanine. Nat Commun. 2021;12:3549
    2) Steinmetzger C, et al. Structure-fluorescence activation relationships of a large Stokes shift fluorogenic RNA aptamer. Nucleic Acids Res. 2019;47(22):11538–11550
    3) Steinmetzger C, et al. A Multicolor Large Stokes Shift Fluorogen-Activating RNA Aptamer with Cationic Chromophores. Chemistry. 2019;25(8):1931–1935
    4) Steinmetzger C, Höbartner C. Probing of Fluorogenic RNA Aptamers via Supramolecular FRET with a Universal Fluorescent Nucleobase Analog. Methods Mol Biol. 2023;2570:155–173
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