Aminoallyl-dUTP-XX-AF594

Aminoallyl-dUTP-XX-AF594 is an aminoallyl-modified nucleoside triphosphate designed for post-synthetic fluorescent labeling using the amine-reactive Alexa Fluor 594 dye. This reagent is commonly used in nucleic acid labeling workflows where an oligonucleotide or cDNA is first incorporated with an aminoallyl-functional dUTP, then derivatized with AF594 to generate bright, photostable fluorescent probes for downstream hybridization and imaging assays. The resulting AF594-labeled nucleic acids are compatible with fluorescence readouts on standard microscopy and plate-based detection systems, supporting visualization and quantification of nucleic acid targets.

1. Nucleic Acid Hybridization Probes

Aminoallyl-dUTP-XX-AF594 is used to generate AF594-labeled DNA or RNA probes for fluorescence hybridization experiments, where the aminoallyl handle enables efficient dye conjugation after incorporation into the nucleic acid. Researchers in genomics, molecular diagnostics development, and molecular imaging workflows use these labeled probes to visualize target sequences in membranes, arrays, or hybridization-based binding assays. The Alexa Fluor 594 fluorophore provides a widely used visible-red emission channel that integrates well with common filter sets and imaging platforms, making the reagent a practical choice for probe construction when a stable fluorescent label is required.

2. Fluorescence In Situ Hybridization

Aminoallyl-dUTP-XX-AF594 supports fluorescence in situ hybridization workflows by enabling preparation of AF594-tagged nucleic acid probes that can localize to specific genomic or transcript targets within fixed samples. Molecular cytogenetics and cell biology labs often rely on aminoallyl-dUTP incorporation followed by AF594 derivatization to produce probes with strong, uniform fluorescence suitable for microscopy-based readout. In these applications, the fluorescent nucleic acid probe is used to map nucleic acid distribution in cells or tissue sections, with signal generated directly from probe binding to the target sequence.

3. cDNA and Transcript Labeling

Aminoallyl-dUTP-XX-AF594 is frequently employed to label cDNA or other nucleic acid products for downstream fluorescence-based quantification and imaging, including transcript expression studies and nucleic acid tracing experiments. By incorporating aminoallyl-dUTP during nucleic acid synthesis and then conjugating AF594, users obtain fluorescently tagged nucleic acids that can be tracked in hybridization assays or fluorescence microscopy workflows. This approach is particularly useful when researchers want to control labeling density through the incorporation step and then convert the aminoallyl functionality into a consistent AF594 fluorophore for robust visualization.

4. Fluorescent Microarray Detection

Aminoallyl-dUTP-XX-AF594 is used in fluorescent microarray and array-based nucleic acid detection workflows where AF594-labeled targets enable readout of hybridization events. In these settings, the reagent helps produce dye-labeled nucleic acids that bind to complementary capture probes on the array, allowing fluorescence intensity to be used as the measurement signal. Array developers and molecular biology teams often choose AF594 labeling for compatibility with standard red-channel scanners and for constructing multi-step labeling strategies that separate nucleic acid synthesis from dye conjugation, improving workflow flexibility.

5. Flow Cytometry Nucleic Acid Assays

Aminoallyl-dUTP-XX-AF594 can be incorporated into nucleic acid labeling strategies that feed fluorescence readouts in flow cytometry, particularly when nucleic acids are used as reporters in hybridization or nucleic acid-based staining formats. Laboratories developing fluorescence-based nucleic acid assays use AF594-labeled targets to generate detectable fluorescence signals in cell-associated or bead-associated formats, leveraging the visible-red emission to distinguish nucleic acid signals from other fluorophores in multiplex experiments. This application is most relevant when the experimental design uses fluorescent nucleic acids as the measured reporter rather than relying on protein or membrane labeling.