Aminoallyl-UTP-X-Cy5 (ethyl)

Aminoallyl-UTP-X-Cy5 (ethyl) is a Cy5-labeled nucleotide analog designed for fluorescent nucleic acid labeling workflows. The aminoallyl handle enables conjugation to biomolecular targets through established coupling chemistries, while the Cy5 fluorophore provides strong far-red fluorescence for visualization and quantitative readouts in nucleic acid assays. Researchers use this reagent to incorporate Cy5 signal into RNA and related nucleic acid constructs for fluorescence imaging and analytical detection.

1. Fluorescent RNA Labeling

Aminoallyl-UTP-X-Cy5 (ethyl) is used to generate Cy5-labeled RNA probes and transcripts for fluorescence-based studies of RNA dynamics. Molecular biology groups commonly incorporate the analog during in vitro transcription or RNA labeling workflows to produce fluorescent RNA that can be tracked in binding experiments, hybridization assays, and imaging experiments where far-red emission helps reduce background from common cellular autofluorescence. The aminoallyl functionality supports downstream conjugation strategies when additional labeling steps are part of the experimental design.

2. Fluorescent In Situ Hybridization

Aminoallyl-UTP-X-Cy5 (ethyl) supports fluorescence in situ hybridization (FISH) and related nucleic acid staining workflows where spatial localization of RNA is required. Cytogenetics, cell biology, and genomics laboratories use Cy5-labeled RNA probes to visualize transcript distribution in fixed cell preparations and microscopy-based readouts. The far-red Cy5 signal is particularly useful when multiplexing with other fluorophores or when minimizing spectral overlap with green/blue channels is important for robust image interpretation.

3. Nucleic Acid Hybridization Assays

Aminoallyl-UTP-X-Cy5 (ethyl) is applied in fluorescence hybridization assays that rely on fluorescently tagged nucleic acid probes to monitor target binding events. Research groups use Cy5-labeled RNA or complementary probe constructs to follow hybrid formation by fluorescence measurement, enabling workflow development for assay optimization and probe evaluation in nucleic acid analysis. The reagent's nucleoside nature helps integrate the Cy5 label into probe design so that signal readout can be performed on standard fluorescence imaging systems and plate-based fluorescence readers used for research assays.

4. Fluorescent Probe Construction

Aminoallyl-UTP-X-Cy5 (ethyl) is frequently incorporated into fluorescent probe development pipelines where a Cy5 fluorophore is required on a nucleic acid scaffold. Chemical biology and assay development teams use the aminoallyl-enabled labeling logic to build probe formats for downstream conjugation or for tailoring probe performance in custom detection schemes. This approach is commonly used when researchers need a far-red fluorescent nucleic acid reagent for microscopy, gel-based fluorescence readouts, or other fluorescence-driven analytical workflows.