Aminoallyl-dUTP-XX-ATTO-643

Aminoallyl-dUTP-XX-ATTO-643 is an aminoallyl-modified thymidine analog bearing an ATTO 643 fluorophore, designed for fluorescent nucleic acid labeling workflows. The aminoallyl functionality enables post-synthetic conjugation strategies to incorporate the dye into DNA/RNA labeling schemes, supporting fluorescence microscopy and quantitative nucleic acid readouts. This reagent is commonly used by molecular biology and genomics labs to generate fluorescently tagged nucleic acids for imaging, hybridization-based assays, and probe construction.

1. Fluorescent Nucleic Acid Labeling

Aminoallyl-dUTP-XX-ATTO-643 is used to introduce ATTO 643 into DNA templates during nucleic acid synthesis, enabling fluorescent tagging of primers, PCR products, or labeled strands for downstream hybridization experiments. Researchers in genomics, molecular diagnostics research, and nucleic acid biochemistry rely on fluorophore-labeled oligonucleotides to visualize target sequences, track hybridization workflows, and support fluorescence-based readouts in microplate and imaging formats. The aminoallyl handle provides an additional conjugation opportunity when researchers need to couple the labeled nucleic acid to linkers, affinity handles, or secondary labeling reagents for assay development.

2. Fluorescence In Situ Hybridization

Aminoallyl-dUTP-XX-ATTO-643 is applied in fluorescence in situ hybridization workflows where labeled nucleic acids are used to localize specific DNA targets in fixed cells, tissue sections, or cytogenetic preparations. Molecular imaging teams and cytogenetics laboratories use ATTO 643-labeled probes to map sequence locations with fluorescence microscopy, supporting co-localization studies with other stains or fluorescent markers. The reagent's nucleoside incorporation into probe strands helps standardize fluorescent probe preparation for consistent imaging across experiments, while the aminoallyl functionality supports flexible probe post-processing when conjugation to additional components is required.

3. PCR and qPCR Probe Construction

Aminoallyl-dUTP-XX-ATTO-643 is frequently incorporated into PCR-based labeling strategies and fluorescence readout development where fluorescently tagged amplicons or probe strands are required. Molecular biology groups use ATTO 643-labeled nucleotides to generate fluorescent PCR products for gel-free imaging workflows, workflow optimization, and assay development requiring sequence-specific fluorescent materials. In probe construction pipelines, the aminoallyl group can be leveraged to attach additional moieties that improve handling, immobilization, or multiplexing design in nucleic acid assay formats.

4. Fluorescent Hybridization Assays

Aminoallyl-dUTP-XX-ATTO-643 is used to create fluorescent oligonucleotide probes for hybridization assays that quantify or visualize nucleic acid interactions. Bioconjugation and chemical biology teams employ ATTO 643-labeled strands to monitor target binding in microarray-style formats, membrane hybridizations, or solution hybridization workflows followed by fluorescence detection. The nucleoside-based labeling approach supports straightforward generation of sequence-specific fluorescent reagents, while the aminoallyl functionality provides a practical route for adding linkers or secondary conjugation elements when assay architectures require modular probe design.