Aminoallyl-UTP-X-Cy3 (ethyl)

Aminoallyl-UTP-X-Cy3 (ethyl) is a Cy3-based fluorescent nucleoside analog designed for post-labeling fluorescence tagging of RNA and related nucleic acid constructs. The aminoallyl handle enables efficient conjugation to amine-reactive fluorophores or coupling chemistries used in labeling workflows, while the Cy3 dye provides bright red-orange fluorescence for microscopy and fluorescence readouts. In nucleic acid analysis and RNA labeling experiments, this reagent is used to generate fluorescently tagged RNA probes and labeled transcripts for visualization and detection.

1. RNA Fluorescent Labeling

Aminoallyl-UTP-X-Cy3 (ethyl) is commonly used by molecular biology and chemical biology groups to incorporate fluorescent nucleotides into RNA during in vitro transcription or RNA labeling workflows. Researchers leverage the Cy3 fluorescence to track RNA localization, monitor RNA handling in assay development, and visualize labeled RNA by fluorescence microscopy. The aminoallyl functionality provides a convenient chemical handle for downstream conjugation strategies when building custom fluorescent RNA reagents, such as multiplexed labeling schemes or probe formats requiring additional functional groups.

2. Fluorescence In Situ Hybridization

Aminoallyl-UTP-X-Cy3 (ethyl) supports fluorescence-based nucleic acid hybridization workflows where labeled RNA probes are hybridized to complementary targets on cells, tissue sections, or microarrays. In these applications, the Cy3 emission is used as the optical reporter for hybridization readout, enabling spatial mapping of RNA species without requiring enzymatic amplification of signal. Typical users include genomics and imaging laboratories developing RNA expression mapping assays, as well as researchers optimizing probe design for microscopy-based detection.

3. RNA Tracking In Assays

Aminoallyl-UTP-X-Cy3 (ethyl) is used as a fluorescent tracer in RNA-centric bioassays where labeled RNA is followed over time or across experimental conditions. Scientists incorporate this reagent into RNA constructs to quantify uptake, binding, or retention in assay formats that rely on fluorescence measurement rather than radiolabels. The Cy3 signal provides a practical readout for plate-based fluorescence assays and imaging workflows, making it useful for method development in nucleic acid analysis and for comparative studies of RNA behavior in different sample matrices.

4. Fluorescent Probe Construction

Aminoallyl-UTP-X-Cy3 (ethyl) is frequently employed in the construction of fluorescent nucleic acid probes for research-grade molecular imaging and analytical development. By integrating a Cy3 fluorophore into nucleic acid materials, teams can generate probe reagents for hybridization studies, workflow validation, and assay optimization where consistent fluorescent labeling is required. The aminoallyl functionality also helps researchers design probe conjugates with additional chemical features when building specialized imaging reagents or multicomponent probe systems.